Develop Bugs

I can not get ANY unroot method to work.

I need to return my phone because the earphone speaker is whacked out but I have spent the last couple hours trying to unroot it and NOTHING is working...
First I tried HTC Sync on my computer, and I get the Error [171]: USB Connecetion Error
Then I tried HTC sync on my bros computer (since I have unrooted using his laptop before with no problems) and I get a different error saying something about i have the wrong version of data utility updater or whatever.
I spent the last couple hours googleing both errors and looking for fixes, but for some reason I could not get any of them to work. I am as frustrated as can be rite now, and any help would be greatly appreciated....
I'd prefer some sort of "dumbed down" step by step process rather than being sent to a another link, because chances are I have tried that method already and I couldn't get it to work...
I also can not get adb shell to work. I installed the sdk, but it still wont show up...
any help from anybody will be greatly appreciated...

try applying the current over the air update. That took root away for many if I remember correctly.

did you enable USB debuging?

I tried searching for the ota's but they're not showing up.
also I am running dc 3.2 currently, which has debugging mode auto-enabled I believe.

So you tried using a stock rom from here to get your phone unrooted?
If you download one of those stock RUU roms it will be an exe file that will automatically install the rom to your phone...is this what you are saying isn't working?
Have you tried doing a full wipe/clear before running anything?

I had the same error when I was unrooting mine. I just unplugged the Evo while it still had the boot loader screen then ran the stock RUU. Worked like a charm.

yes. I tried installing the shipped RUU using HTC Sync, but sync keeps ****ting out on me and giving me errors. My only option seems to be unrooting my phone without using htc sync. But I have tried a couple of the methods e found, but none of them had detailed enough instructions for me to make them work....
I'v literally spent the majority of my day trying to unroot this damn phone and its driving me crazy.... I don't know wth the problem is.. I unrooted a previous EVO before, now it seems hopeless /:

Comrade P said:
I had the same error when I was unrooting mine. I just unplugged the Evo while it still had the boot loader screen then ran the stock RUU. Worked like a charm.
Click to expand...
Click to collapse
what do you mean?

I GOT IT
Hang tight fellow XDAers. Tutorial coming in about 20 min. I will post link in this thread when done. Took me forever to get past those errors too....

do the over the air update that is freshly released it will remove root and nand

Bang3r said:
Hang tight fellow XDAers. Tutorial coming in about 20 min. I will post link in this thread when done. Took me forever to get past those errors too....
Click to expand...
Click to collapse
In for this

starplaya93 said:
I need to return my phone because the earphone speaker is whacked out but I have spent the last couple hours trying to unroot it and NOTHING is working...
First I tried HTC Sync on my computer, and I get the Error [171]: USB Connecetion Error
Then I tried HTC sync on my bros computer (since I have unrooted using his laptop before with no problems) and I get a different error saying something about i have the wrong version of data utility updater or whatever.
I spent the last couple hours googleing both errors and looking for fixes, but for some reason I could not get any of them to work. I am as frustrated as can be rite now, and any help would be greatly appreciated....
I'd prefer some sort of "dumbed down" step by step process rather than being sent to a another link, because chances are I have tried that method already and I couldn't get it to work...
I also can not get adb shell to work. I installed the sdk, but it still wont show up...
any help from anybody will be greatly appreciated...
Click to expand...
Click to collapse
Link to my tutorial (you will need adb though): http://ip208-100-42-21.static.xda-developers.com/showthread.php?p=7471721#post7471721

I'd find you the link but I'm at work right now but someone has a fix for that error. Basically I got that error whenever I tried to run the stock RUU and when the phone had the bootloader screen up I just took out the USB cable, stuck it back in, and then ran the RUU again.
Sent from my EVO using the XDA App

Bang3r said:
Hang tight fellow XDAers. Tutorial coming in about 20 min. I will post link in this thread when done. Took me forever to get past those errors too....
Click to expand...
Click to collapse
You have no idea how much i'm looking forward to your guide. If it works then you my friend deserve a metal.

starplaya93 said:
You have no idea how much i'm looking forward to your guide. If it works then you my friend deserve a metal.
Click to expand...
Click to collapse
It's up: http://ip208-100-42-21.static.xda-developers.com/showthread.php?t=743192

This works if you're rooted and NAND unlocked.
http://forum.xda-developers.com/showthread.php?t=715915

cosine83 said:
This works if you're rooted and NAND unlocked.
http://forum.xda-developers.com/showthread.php?t=715915
Click to expand...
Click to collapse
Well...I guess I missed that one when I was tooling around, so I wrote my own. You're right. It clearly mentions needing the proper HBOOT, which I found was the key.. But it doesn't mention how to UN ROOT after you "Start Over." It's basically the same thing though...Cheers...

http://forum.androidcentral.com/htc-evo-4g-roms-hacks/19278-how-unroot-return-stock.html

Bang3r said:
Well...I guess I missed that one when I was tooling around, so I wrote my own. You're right. It clearly mentions needing the proper HBOOT, which I found was the key.. But it doesn't mention how to UN ROOT after you "Start Over." It's basically the same thing though...Cheers...
Click to expand...
Click to collapse
When I place the PC zip file on my sd card and then boot into Hboot, it fails to recognize the card.
I used simple root to root my phone and I am running the .79 Hboot.
I'm trying to follow your instructions but I am about ready to throw this god dam phone at the wall and use insurance to get another one

starplaya93 said:
When I place the PC zip file on my sd card and then boot into Hboot, it fails to recognize the card.
I used simple root to root my phone and I am running the .79 Hboot.
I'm trying to follow your instructions but I am about ready to throw this god dam phone at the wall and use insurance to get another one
Click to expand...
Click to collapse
You have the wrong H Boot. See here: http://ip208-100-42-21.static.xda-developers.com/showthread.php?p=7471721#post7471721
Should work on any .79 HBOOT in theory, but you have to change it to the .76 one before the RUU or the zip step you are having trouble with. Do Toast's step two which is found in the thread linked above.

[Q] For.The.Love.Of.GOD - Pls Help Me Finally ROOT

Im stupid stuck on the first step and Ive been at it for a week now, I just want to Root, then Ill never need to PC plug the phone again.
The problem is my Evo 4G ONLY connects to the pc to charge. Ive tried fixes, sorry, Ive wasted time on fixes and help posts; I did just successfully install 3.29.651.5IMG.zip from
http://forum.xda-developers.com/showthread.php?t=838448, but that was just been an update.
Anything Terminal Emulator, HBOOT or RECOVERY I can do, thanks for the help, google searching is pulling up all androids, allphone models, all Dates, I keep getting 2009 results.
ALSO, to anyone interested in Metro Flash, the 10 dollar phone flashing service from Metro PCS; in Nevada, found out yesterday, MetroFlash isnt available because the setup or network is/are changing or something. I forgot the specifics, but the rep said that even if I went and did it in CA, it wouldnt work in NV because of that.
Supersonic EVT2-3
Hboot 97
MicroP-041f
Radio 2.15.00.09.01
Build 3.29.651.5 cl252548 release-keys
Hardware v003
PC36IMG

Do you have HTC Sync downloaded to your cpu. IF you don't you need to, so that you will have the drivers that you need to start the process.

I tried versions 2.something and the version on the htc support site, thanks though.

log3an said:
I tried versions 2.something and the version on the htc support site, thanks though.
Click to expand...
Click to collapse
And you are sure you are downloading the correct version. Are you on windows? 32bit? 64bit? Mac? All of that matters so you D/L the correct version otherwise your cpu will not recognize your phone and install the drivers. If its not doing that then it has to be that you aren't having the drivers installed correctly.

I've had a bad USB cable be the culprit of my computer not recognizing my phone. Mine would say "unrecognized USB device" though.
I would try another cable and report back.

Dude i friggin LOVE the help, but the port on the phone is screwed. i actually came back to elaborate on my response; Ive downloaded Most of what I could to ADB if it were working- JDK, Android SDK full, super 1 click, autoroot, unrevoked3, and several RUUs. Initially I followed directions, after nothing working, I experimented. Then I did a faulty usb port search, and all of the suggestions were 'unplug and replug' and such. Its defected.

Spencer my computer isnt responding at all to the USB plug, but thats what posts said, it could be the port or the cord or the pc usb port/hub. its my phone.

log3an said:
Dude i friggin LOVE the help, but the port on the phone is screwed. i actually came back to elaborate on my response; Ive downloaded Most of what I could to ADB if it were working- JDK, Android SDK full, super 1 click, autoroot, unrevoked3, and several RUUs. Initially I followed directions, after nothing working, I experimented. Then I did a faulty usb port search, and all of the suggestions were 'unplug and replug' and such. Its defected.
Click to expand...
Click to collapse
Oooooooh, well you're probably looking for help in the wrong place. You need to take the phone for repair. But I did see a thread on here someone posted about how to root without using a computer, but I didn't actually open it to see what the process was. Maybe that will help you out.

You know what Swaze, Im un and re-installing right now, its HTC Sync SETUP 3.0.551, the other was htc sync2.0.35. Be back after the reboot.
-Went into SERVICES too, Id 'manualed' a few items that I hadnt considered..
I didnt answer either, but I have win7 32 and 64bits installed on this pc, Ive been on the 32bit since the first day.
--And that wasnt it. I was hopeful it was the windows COM thing id disabled.

Try mailing the files to u then use a file explorer to move where u want them. Unless ur using an ruu I don't think u actually need connection.
If I remember right unrevoked has set it up where u can do everything. from your phone using a web site. Maybe I'm wrong.
Sent from my PC36100 using XDA App

Do you have USB Debugging enabled on the phone?

sand thats actually something worth trying, use a root file explorer to copy/paste the flash-image files since I dont have S-Off. Nice, thanks dude.

This will probably sound like the dumbest idea EVER but why can't you just buy a card reader and put the images on the SDCard the old fashioned way? Seems easy enough to me, am I missing something? Also couldn't use just copy the files over using your DropBox? Thats how I do it.
or how about WiFi Explorer? its an app in the market lets you browse and copy files to your SDCard via WiFi.

sand thats actually something worth trying, use a root file explorer to copy/paste the flash-image files since I dont have S-Off. Nice, thanks dude.

Update- Root Manually
Following Sand's suggestion, I began google searches of the manual root processes, supporting information, etc.
Here's where we're at
I began by copying the flash-image to the proper system folders, using Root Explorer, File Expert works too. If you copy files to system/protected folders with an ordinary file manager, the permissions fail.
http://forum.xda-developers.com/archive/index.php/t-918275.html
So, the next step was to learn how to chmod to 775, for those lost READ THIS, its a nice guide on linux permissions and how to set them.
http://forum.xda-developers.com/archive/index.php/t-918275.html
And now Im watching Old Christine, eating a burrito. Ill post more if anyone's interested, if anyone has any tips or shortcuts for me, thatd be awesome.

Update
Just updated another post, and this is what I put
in no particular order,
ADB Over TCP/IP Help
this was the most recent attempt, Android lacks adhoc support though
ADB For Beginners
Commands like 'cp' and 'cat' are used interchangeably it seems, when I find a fuller command list incorporating more, this one will be replaced
Always Up To Date Root Guide
This is a great place for ideas if you're stuck, theyve put all the verified instruct-files on one page. I guess thats what moderators on forum sites do, consolidate information, this was just easy to read without weeding through any unrelated information
Evo 4G Root/Android Root
This was another promising page I came across, but the the 300mb zip failed installation. 'Main Version is Older', all the files in the zip were for like 1.0 and my Evo's radio is 2.15. Changing the Android-info.text in rom .zips to match my devices information was my next idea. Do not do it though, scanning google result lines said it could brick your android.
Visionary, No ADB
This is last because it was a bastard, long story short its not even for the Evo. The jerk.
Updated Again - ADB over Tcp/Ip Works, How to Root?
I was tethering when I found the Adb over wifi so I didnt test it- shouldve though. I connect now cmd tells me, but the 1 step rooters arent working. Before I waste another weeks chasing bad paths, what should I use?

After wasting so much time with your issue, why haven't you used the time to get the phone fixed/replaced?

I had similar issues when I rooted my phone. My phone kept disconnecting while the rooting process was taking place. The issue I found out was my USB cord. I went to the Sprint store and got a new one, then my computer (W7) detected my phone through disk drive.
The new cord worked, using the AutoRoot program found in the rooting section here, and it completed my root.

I hadnt thought of that
SteveGrandRapids said:
After wasting so much time with your issue, why haven't you used the time to get the phone fixed/replaced?
Click to expand...
Click to collapse
SteveGrandRapids, youre a fricken GENIUS. Or an ass; I dont have Sprint. From another of my posts asking the same question:
''Uminchu I wish the problem was the port or plug. Then again if it were, the original owner wouldnt have sold it to me. My friend has had this phone sprint serviced twice, once at best buy when we thought it was the powermat malfunctioning. third time he just got a new phone, now I have this one and metro pcs; an account that Ive had for years now and have flashed two other phones to. ''
Thanks for the pollution.

log3an said:
SteveGrandRapids, youre a fricken GENIUS. Or an ass; I dont have Sprint. From another of my posts asking the same question:
''Uminchu I wish the problem was the port or plug. Then again if it were, the original owner wouldnt have sold it to me. My friend has had this phone sprint serviced twice, once at best buy when we thought it was the powermat malfunctioning. third time he just got a new phone, now I have this one and metro pcs; an account that Ive had for years now and have flashed two other phones to. ''
Thanks for the pollution.
Click to expand...
Click to collapse
wow ever think flashing to another company might be doin something? my phone was a pita to root im a total noob ran unrevoked stopped pulled the bat. red triangle restarted unrev picked up quit third time it restarted the whole process but ran thru and rooted me so i dont know metro pcs..i see their booths but sprints always been good to me

Please help me root!

Please help me root this device. I have only ever done my Gs2 a few times with flashing etc, so am basically a complete noob.
I have tried for the last couple of hours and am wanting to go mad. I have followed all the lines about unlocking the device and the fastbook oem unlock, But all it ever tells me is waiting for device. Im guessing im missing drivers, but I have dont the samsung drivers a couple of times, and unzipped and followed the instructions.
Any easier to follow guides or info out there that can help me?
When I plug the phone in to unlock it, i dont get the usual ding from windows, i just get a little thre dings like it doesnt know what it is.
please help. Thanks....
Ps, sorry if I am being stupid or cluttering the forum. cheers..

No help out there at all???
If any one can I will be so grateful, Or if anyone is near to welwyn garden / st albans maybe youd fancy rooting 2 of these nexus' for me and il give you a drink?
Thanks..

Look in the development forum:
http://forum.xda-developers.com/showthread.php?t=1352413
Install the android version of pdanet on your PC... it will uninstall but will leave the drivers you need.

kravevr6 said:
No help out there at all???
If any one can I will be so grateful, Or if anyone is near to welwyn garden / st albans maybe youd fancy rooting 2 of these nexus' for me and il give you a drink?
Thanks..
Click to expand...
Click to collapse
Haven't rooted mine yet, I'll be doing it at the weekend. Had loads of issues with the drivers when I rooted my Nexus S. In the end I installed PDA net on my PC - the drivers installed with that worked fine (you don't actually use PDA net thereafter) Not sure if this works with the GN but you will not do any harm trying it.
Sent from my Galaxy Nexus using XDA App

jaketurbo said:
Look in the development forum:
http://forum.xda-developers.com/showthread.php?t=1352413
Install the android version of pdanet on your PC... it will uninstall but will leave the drivers you need.
Click to expand...
Click to collapse
Beat me to it
Sent from my Galaxy Nexus using XDA App

Cheers guys, Im so new to this, its so frustrating. Its got to be a driver issue. My comp reconises the phone when its on, but when its in bootloader mode, windows is giving me three dull bells when connecting the device....
will have a look at the other thread, Have already read that one I think, and looked so foreign to me!!! lol

I cant pst in the other thread, but have downloaded and installed pda net for android, and when it gets to installing the drivers from the phone, it does it all, ie galaxy nexus , the other driver that i cant remember and the galaxy driver is not installing. Even gone two miles down the road and got a different laptop. no matter what I download or ty and install it just dnt do it.
can some one either make a real simple idiots guide for me the idot, or locally please let me pay you a small fee to root these two phones. Im almost in tears after 5.5 hours of constant crap and pathetiness.
Wishing right now i had not bthered with these phones. At least my s2 and flashing was simple.

It says "waiting for device" because for some crazy reason when you are in fastboot mode Windows (which is what I'm using) uses a different USB driver than when you are in "normal" usb connect mode.
What you need do to sort it out is to go to Device Manager and change the driver to use the Samsung instead of whatever crazy one Windows has decided to use. Then you can carry on with doing the bootloader unlocking.

kravevr6 said:
I cant pst in the other thread, but have downloaded and installed pda net for android, and when it gets to installing the drivers from the phone, it does it all, ie galaxy nexus , the other driver that i cant remember and the galaxy driver is not installing. Even gone two miles down the road and got a different laptop. no matter what I download or ty and install it just dnt do it.
can some one either make a real simple idiots guide for me the idot, or locally please let me pay you a small fee to root these two phones. Im almost in tears after 5.5 hours of constant crap and pathetiness.
Wishing right now i had not bthered with these phones. At least my s2 and flashing was simple.
Click to expand...
Click to collapse
Ok so what have you done so far?
You have the pdanet drivers installed on your pc?
You need to boot into fastboot mode to install the driver you need to root your phone.
*THIS* guide will explain what adb and fastboot are exactly.
*THIS* guide will show you how to set up adb and fastboot.
When unlocking the bootloader you will need the file fastboot.exe which you can put in the root of your c drive for easy access. The atteached file needs to be renamed from .zip to .exe as you cant attach .exe files in xda.
If you have any more questions then just ask .
Mark.

ok..... having gone through similar a few minutes ago.
The drivers kept saying that they had failed to install. kept trying over and over.
then i twigged:
1) made sure debugging mode was on
2) Rebooted the unit into bootloader mode - suddenly the adb driver installed successfully doh !
wonder if this is the same issue you are having ... the adb drivers only install successfully once the nexus is connected via usb and in bootloader mode
of course you may know all that already but it had me stumped for a while

Thank you guys, some good info and detailed posts, which is what I was hoping for! I'm in bed now, but will give this a blast and report back tomorrow!
Really appreciated!
Thanks .......
Sent from my Galaxy Nexus using Tapatalk

Big thanks to everyone. Woke up with a clearer head and proceeded to try again. Done as wilbur said and installed drivers in recovery mode. And perfect.......
after so many problems all was sorted. Then used superboot, and all was ok. 2 galaxy nexus's rooted. think the lesson learnt is to walk away instead of furiously trying things.
Cheers for all the input. What a easy methd ONCE all the drivers are there!!
Cheers people

Glad you got it sorted

[Q] Ay way to root g2 without ADB. Gingerbread stock??????

I cant use adb and visionary does not seem to work.
Is there a way to root the Gingerbread rom without having to get adb to work?
Because it will not work for me.

Far as I know you'll need adb. Keep trying. You'll get it. When I had a backflip over a year ago. I went crazy trying to understand how to root. Now adb is easy. Easier with win xp I think.
Sent from my T-Mobile G2 using XDA App

myphonesbetter said:
I cant use adb and visionary does not seem to work.
Is there a way to root the Gingerbread rom without having to get adb to work?
Because it will not work for me.
Click to expand...
Click to collapse
Unfortunately not; there are some "no adb required" guides but they tend to have a high brick rate.
How is adb not working for you?
Sent from my HTC Vision using XDA App

Idk ive always had problems with adb on my computers.
I was having a problem finding a driver but i found one on a youtube video from g2hacks.
Heres the link.
http://g2hacks.com/g2-drivers/g2-phone-windows-drivers-download/
Incase anybody else is loosing their mind clicking all the links in the how to's on this forum. which all just take you in circle. like getting the run around from an insurance company.
I seem to be recognizing ill try to push some files now.

myphonesbetter said:
Idk ive always had problems with adb on my computers.
I was having a problem finding a driver but i found one on a youtube video from g2hacks.
Heres the link.
http://g2hacks.com/g2-drivers/g2-phone-windows-drivers-download/
Incase anybody else is loosing their mind clicking all the links in the how to's on this forum. which all just take you in circle. like getting the run around from an insurance company.
I seem to be recognizing ill try to push some files now.
Click to expand...
Click to collapse
Did you not go to the wiki which has a step by step guide, including links?
Sent from my HTC Vision using XDA App

Yah my problem this time was that i didnt have a driver. but that link worked. none of the ones on this website would though.
Everywhere i read it says i have to downgrade first. i was following the guide but i have to install the original g2 OTA signed.
Now ive ran into the problem that every copy i try to download is corrupt. just my luck. a 30 min process takes 5 hrs. or more.
I got to the point where adb reboot my phone into bootloader after the the temp root and did not realize the update.zip would not work. now im afraid to turn my phone back on. i dont want to have to do everything over again.

Ok figured that out. Windows xp was set to hide file extensions so i was nameing is pc10img.zip.zip
Guess ill see what problem lies ahead. i swear i could write a 100 step write up of what i have to do for a 15 step write up.

Got it rooted. Just took all day. Could not let my phone win. LOL.
Havent spent that long on a phone since i installed android and full WP7 dual boot on my HD2.
I run xp x86 on a computer that came with vista. maybe thats why i was having a problem.
I was able to install the nand backup from my old phone right to this phone. just a million hours of tinkering. I cant imagine how frustrated the developers get trying to make these roms work. i bet there compulsive about it though.
If someone sees this please put these drivers on the how to sticky section.
All the other links either would not work for me or were broken.

myphonesbetter said:
Got it rooted. Just took all day. Could not let my phone win. LOL.
Havent spent that long on a phone since i installed android and full WP7 dual boot on my HD2.
I run xp x86 on a computer that came with vista. maybe thats why i was having a problem.
I was able to install the nand backup from my old phone right to this phone. just a million hours of tinkering. I cant imagine how frustrated the developers get trying to make these roms work. i bet there compulsive about it though.
If someone sees this please put these drivers on the how to sticky section.
All the other links either would not work for me or were broken.
Click to expand...
Click to collapse
XP and vista shouldn't matter with the chip architecture so long as it supports it. But then again if it didn't, it would not install at all, and if it did for some weird reason it would not boot so that wasn't your problem.

[Q] [x-post from LG G3] D851 unroot / restore to stock

I recently picked up a D851 (TMobile). I rooted it, but did not replace the ROM or install a custom bootloader.
Last weekend, the phone started randomly rebooting. Watching logcat via adb showed me several random apps throwing sig11s, after which the phone would give up and reboot. Cycle repeats.
This looks like a hardware issue, as the apps that crash change on each boot cycle.
I arranged with TMobile to swap the device, but they cautioned me that the phone must be returned to an unrooted state.
I've had a hell of a time with it from here. My first try was to install the LG drivers and the PC Suite under a Windows VM, as I do not run Windows at home. Enabling USB passthrough for the phone to the VM let Windows see the phone, but the LG drivers would invariably fail with 'Device cannot start. Code 10.'. Likewise, the PC Suite couldn't find the phone.
Next step was to throw together some spare hw and install Windows 7 on that (a desparate move, to be certain. ). The LG drivers can now recognize the phone, so that's a definite plus. The LG PC Suite, though, claimed that my phone could not be upgraded. Wonderful.
Next step was to try this tutorial: http://www.androidrootz.com/2014/07/how-to-unroot-lg-g3-all-variants.html . I was able to get further with this method, but as it begins to flash SYSTEM, it pauses, and then dies with 'We can't communicate with Phone'. End result - I now have a soft bricked phone. On the phone, I see the port - COM41 - appear, and the usb animation starts to spin ... and after a few seconds, stops. It's at this point that Flashtool throws the Can't Connect error.
I next tried following this tutorial: http://forum.xda-developers.com/showthread.php?t=2785089 to flash a KDZ. The newer LG Flash tool used here can't create a connection to my phone for flashing.
I've run into a wall here. Any ideas on where to go next? I need to reset this phone back to a working stock state so that I can send it back.

http://lgg3root.com/lg-g3-root/how-to-unrootunbrick-lg-g3/
Use this and follow video carefully. Has worked many times. Use all his links not what you have downloaded.
NOTE 4

BACARDILIMON said:
http://lgg3root.com/lg-g3-root/how-to-unrootunbrick-lg-g3/
Use this and follow video carefully. Has worked many times. Use all his links not what you have downloaded.
NOTE 4
Click to expand...
Click to collapse
Also - as silly as it sounds, make certain you're using the USB cable that came with the phone. This has solved problems for a lot of people when trying to revert to stock.

etawful said:
Also - as silly as it sounds, make certain you're using the USB cable that came with the phone. This has solved problems for a lot of people when trying to revert to stock.
Click to expand...
Click to collapse
I wasn't initially, but I did switch to it last night. Still no go.
I suspect it's either the phone itself (see above: re suspected hw failure), or the PC in question (nVidia chipset on this old motherboard, and I've had more than a few problems with adb talking to phones on nVidia motherboards). I'm going to try Bacardilimon's suggestion tonight, on a PC that has *nothing* nVidia-related in it, before I throw in the towel. As it is, the failing phone needs to be back to TMO by the middle of next week, so I'm all but out of time to resolve this.

Drake Maijstral said:
I recently picked up a D851 (TMobile). I rooted it, but did not replace the ROM or install a custom bootloader.
Last weekend, the phone started randomly rebooting. Watching logcat via adb showed me several random apps throwing sig11s, after which the phone would give up and reboot. Cycle repeats.
This looks like a hardware issue, as the apps that crash change on each boot cycle.
I arranged with TMobile to swap the device, but they cautioned me that the phone must be returned to an unrooted state.
I've had a hell of a time with it from here. My first try was to install the LG drivers and the PC Suite under a Windows VM, as I do not run Windows at home. Enabling USB passthrough for the phone to the VM let Windows see the phone, but the LG drivers would invariably fail with 'Device cannot start. Code 10.'. Likewise, the PC Suite couldn't find the phone.
Next step was to throw together some spare hw and install Windows 7 on that (a desparate move, to be certain. ). The LG drivers can now recognize the phone, so that's a definite plus. The LG PC Suite, though, claimed that my phone could not be upgraded. Wonderful.
Next step was to try this tutorial: http://www.androidrootz.com/2014/07/how-to-unroot-lg-g3-all-variants.html . I was able to get further with this method, but as it begins to flash SYSTEM, it pauses, and then dies with 'We can't communicate with Phone'. End result - I now have a soft bricked phone. On the phone, I see the port - COM41 - appear, and the usb animation starts to spin ... and after a few seconds, stops. It's at this point that Flashtool throws the Can't Connect error.
I next tried following this tutorial: http://forum.xda-developers.com/showthread.php?t=2785089 to flash a KDZ. The newer LG Flash tool used here can't create a connection to my phone for flashing.
I've run into a wall here. Any ideas on where to go next? I need to reset this phone back to a working stock state so that I can send it back.
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There is a link in the general thread on how to return to stock including a method using twrp. It's a sticky thread at the top I've never done the twrp method myself but it can more than likely be done without a computer. Twrp can be installed via Playstore if you don't already have it

BACARDILIMON said:
httx://lgg3root.com/lg-g3-root/how-to-unrootunbrick-lg-g3/
Use this and follow video carefully. Has worked many times. Use all his links not what you have downloaded.
NOTE 4
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Holy hell. That site's links are absolutely infuriating. Anyone who puts each and every download link for software referenced by a howto behind separate timed appearance links that you have to ALSO enter an annoying captcha to enable should be shot out of a cannon - or, at the very least, have their howto ignored by the rest of the world.
Suffice it to say, the quality of that page doesn't give me much confidence that this will work any better than what I've tried already. Since I've already wasted a crapload of time on this project, and more on following those damned links, I'll give it a try tonight, but I'm not going to hold my breath.
Is the author of that page an XDA member? If so, please let me know who he is, so I can berate him personally. Thanks.

Toneman07 said:
There is a link in the general thread on how to return to stock including a method using twrp. It's a sticky thread at the top I've never done the twrp method myself but it can more than likely be done without a computer. Twrp can be installed via Playstore if you don't already have it
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Click to collapse
I'd consider doing that, except as I mentioned, the G3 in question disconnected during a run of Flashtool, rendering it without a working OS to boot to. The phone now boots straight to download mode. The good news is, it's now officially unrooted. The bad news is, it's also officially bricked until I can get an OS flash to work.

Drake Maijstral said:
Holy hell. That site's links are absolutely infuriating. Anyone who puts each and every download link for software referenced by a howto behind separate timed appearance links that you have to ALSO enter an annoying captcha to enable should be shot out of a cannon - or, at the very least, have their howto ignored by the rest of the world.
Suffice it to say, the quality of that page doesn't give me much confidence that this will work any better than what I've tried already. Since I've already wasted a crapload of time on this project, and more on following those damned links, I'll give it a try tonight, but I'm not going to hold my breath.
Is the author of that page an XDA member? If so, please let me know who he is, so I can berate him personally. Thanks.
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OK I gonna keep it real with you. You can either enter the captcha and fix the issue or throw the phone away. Yes he is a member and for every phone that is out their he has its own page doing this for us. If you can't fix your phone with his method then it not the method but you. I have used this for many bricks. It works and it works great. Sorry if he making you do a little typing but like I said u can use his method or keep trying the other methods. Good luck
NOTE 4

BACARDILIMON said:
OK I gonna keep it real with you. You can either enter the captcha and fix the issue or throw the phone away. Yes he is a member and for every phone that is out their he has its own page doing this for us. If you can't fix your phone with his method then it not the method but you. I have used this for many bricks. It works and it works great. Sorry if he making you do a little typing but like I said u can use his method or keep trying the other methods. Good luck
NOTE 4
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After going through the painful process of clicking his links, I found that everything I downloaded is the same thing I already had, except for Flashtool - lgg3root's is actually older. Even the TMO firmware for my phone and the dll are both exactly the same, and I checked by running md5sum on them.
But hey, it must be me. There's clearly no other technology-related cause for this issue. I obviously don't know how to follow a howto, right?
Thanks for 'keeping it real'.

Drake Maijstral said:
After going through the painful process of clicking his links, I found that everything I downloaded is the same thing I already had, except for Flashtool - lgg3root's is actually older. Even the TMO firmware for my phone and the dll are both exactly the same, and I checked by running md5sum on them.
But hey, it must be me. There's clearly no other technology-related cause for this issue. I obviously don't know how to follow a howto, right?
Thanks for 'keeping it real'.
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See we agree.
NOTE 4

BACARDILIMON said:
See we agree.
NOTE 4
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Not likely.
In any case, it failed again. The video he did gave me the exact same steps I followed elsewhere, and unsurprisingly, it failed with 'We can't communicate with Phone', after beginning the flash process. There is something else wrong here, though I'm not certain if the failing phone is at fault or the PC in question is causing the issue. To be crystal clear, the flash process starts, and then, at a random point during the flash, it completely stops, and Flashtool eventually gives up and throws the aforementioned error.
Any other ideas? If not, I'm going to have to try another PC to rule that out as the culprit. Sigh.

Mine gave the same error as well as couldn't communicate with server but the flash process continued running and the phone rebooted took about 3 minutes u learned not to touch any of the popups on the screen during flash and sorry I missed the part about no OS I thought you were booting to recovery... Driving while reading not the best idea

Toneman07 said:
Mine gave the same error as well as couldn't communicate with server but the flash process continued running and the phone rebooted took about 3 minutes u learned not to touch any of the popups on the screen during flash and sorry I missed the part about no OS I thought you were booting to recovery... Driving while reading not the best idea
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Nope, the phone is definitely not doing anything - the usb animation on the G3 completely stops before Flashtool throws the error.
And damnit, quit reading while driving. You can do that later.

Moved the hdd Windows is installed on to another PC with a different chipset. After it updated drivers, I tried again. Flash proceeded partway, then died. Reset phone, Flashtool reststarted flash from scratch, flash died at 15%.
15% is interesting. While I've seen the flash die at various points, 15% is the one that was most often repeated. This tells me the failure follows the phone, not the PC - which makes sense, as the phone has a suspected RAM failure.
At this point, it appears that flashing this phone is impossible due to faulty hw. Hopefully TMO (and eventually, LG) will accept the faulty phone back with no OS, because there's no way an OS is being written to this device ever again.

Thank you for answering

yanowman said:
Thank you for answering
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No problem. There's nothing I hate more than stumbling across a thread where the OP has the same problem I have, only to find it was never updated with the solution.

Good luck man let us know what tmobile says