Develop Bugs

[Q] Help updating baseband

Is there any method to update the baseband on the AT&T Galaxy S3 (SGH-1747) via clockwork mod. I know this can be done via Odin but the usb connector on my phone is behaving properly and randomly disconnects the phone at times. I am currently on baseband version 1747UCLG1 because I have been running a custom ROM since the 4.0.4 stock build. I need to update because the latest AOSP ROMs are not compatible with my baseband version. The baseband version I need is version I747UCDLK3. Thanks in advance for your time.

Just flash zip file
http://forum.xda-developers.com/showthread.php?t=1831898
Sent from my SGH-I747 using xda app-developers app

pancakes565 said:
Is there any method to update the baseband on the AT&T Galaxy S3 (SGH-1747) via clockwork mod. I know this can be done via Odin but the usb connector on my phone is behaving properly and randomly disconnects the phone at times. I am currently on baseband version 1747UCLG1 because I have been running a custom ROM since the 4.0.4 stock build. I need to update because the latest AOSP ROMs are not compatible with my baseband version. The baseband version I need is version I747UCDLK3. Thanks in advance for your time.
Click to expand...
Click to collapse
It's not your baseband that needs updating it's your bootloader. Completely different things but they share the same name.
You can either revert back to stock and let your phone officially update itself via Kies or search around the CM10.1 development thread for some Odin flashable files that will update just your bootloader and a couple of other behind the scene firmware.
---------- Post added at 03:17 PM ---------- Previous post was at 03:06 PM ----------
Here is a useful thread to help you find what you need.
http://forum.xda-developers.com/showthread.php?t=2321310

[Q] Update to 4.3 from rooted 4.1.1

Could some one answer a few questions I have on how to go from rooted 4.1.1 to latest build. I have read and DL'd the zip from the "[LEAK] AT&T 4.3 UCUEMJ2 (Root & Knox versions)" thread and was wondering if the the rom can be loaded directly from CM recovery. Is the new bootloader required or optional?
Thanks
Zb
Model
SGH-I747
Android Version
4.1.1
Baseband
I747UCDLK3
Build
JR003L.I747UCDLK3
Recovery
CM 6

ZKornecki said:
Could some one answer a few questions I have on how to go from rooted 4.1.1 to latest build. I have read and DL'd the zip from the "[LEAK] AT&T 4.3 UCUEMJ2 (Root & Knox versions)" thread and was wondering if the the rom can be loaded directly from CM recovery. Is the new bootloader required or optional?
Thanks
Zb
Model
SGH-I747
Android Version
4.1.1
Baseband
I747UCDLK3
Build
JR003L.I747UCDLK3
Recovery
CM 6
Click to expand...
Click to collapse
Have you checked to see if you can get OTA update or update via the latest version of Kies? I was able to update from 4.1.1 to 4.3 with 2 different pre-rooted i747s - one officially via OTA and the other by flashing the same zips you refer to via cm recovery so maybe that answers your question. Before taking the one-way trip to 4.3, however, be sure you are done messing with your phone at the older firmware including unlocking, if required, as you may not be able to go back.

Larry2999 said:
Have you checked to see if you can get OTA update or update via the latest version of Kies? I was able to update from 4.1.1 to 4.3 with 2 different pre-rooted i747s - one officially via OTA and the other by flashing the same zips you refer to via cm recovery so maybe that answers your question. Before taking the one-way trip to 4.3, however, be sure you are done messing with your phone at the older firmware including unlocking, if required, as you may not be able to go back.
Click to expand...
Click to collapse
I wasn't able to update via Kies. If I use CM recovery is there a specific order I need to install with and can I install the new bootloader with CM Recovery or do I need to use odin?

ZKornecki said:
I wasn't able to update via Kies. If I use CM recovery is there a specific order I need to install with and can I install the new bootloader with CM Recovery or do I need to use odin?
Click to expand...
Click to collapse
I'm not aware there is any Odin flashable file for 4.3 yet. You may follow the steps in the link below for manual update via CM...
http://www.smartphonejam.com/2013/1...fficial-android43-i747ucuemjb-ota-update.html
You didn't say if you tried the OTA update? If you want to remain on stock, this is always the safest bet. If you are currently on official 4.1.1 you should be able to get this via WiFi with a valid AT&T sim card in your phone.

Me personally would avoid the official OTA update unless you're absolutely sure you want to keep it. Once you take the bootloader MJB you cannot flash any stock rom anymore unless you have an I747M then you can only flash the official 4.3.
I am on the MJ2 leak bootloader and have no issues, running S3Rx with the MJB modem phone runs great, if something happens I can simply flash anything I want to with Odin.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

theramsey3 said:
Me personally would avoid the official OTA update unless you're absolutely sure you want to keep it. Once you take the bootloader MJB you cannot flash any stock rom anymore unless you have an I747M then you can only flash the official 4.3.
I am on the MJ2 leak bootloader and have no issues, running S3Rx with the MJB modem phone runs great, if something happens I can simply flash anything I want to with Odin.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Exactly. I have also stayed away from the official 4.3. I have no idea why so many people around here just insist that their phone be on the latest update. Ok, the ones that had some major issues previously I could see, and yes you're going to have your exceptions whose phones will work just fine on 4.3. But all this 4.3 has done is create even more issues, with no flash-able firmware to go back to when something goes wrong. Some say there is no major reason not to update, but I say that there is no major reason to update, as most never give a reason to why they want to update. I just don't get it, other than these updates have become like new toys, just something new to play with.

shortydoggg said:
Exactly. I have also stayed away from the official 4.3. I have no idea why so many people around here just insist that their phone be on the latest update. Ok, the ones that had some major issues previously I could see, and yes you're going to have your exceptions whose phones will work just fine on 4.3. But all this 4.3 has done is create even more issues, with no flash-able firmware to go back to when something goes wrong. Some say there is no major reason not to update, but I say that there is no major reason to update, as most never give a reason to why they want to update. I just don't get it, other than these updates have become like new toys, just something new to play with.
Click to expand...
Click to collapse
shortydoggg thanks for your post and you actually hit the nail on the head. I can't think of reason I NEED to update, I just get bored and like to play. My warranty is up so voiding that isn't an issue and my 4.1.1 runs just fine, but by playing I learn so I like to play. 4.3 has a few nice features but if prevents the phone from being re-flashed then the risks most-likely aren't worth the benefits. I am just doing my due diligence, researching and asking questions. I really appreciate all the input and advice I get from forums such as this so I can make an intelligent decision.

ZKornecki said:
shortydoggg thanks for your post and you actually hit the nail on the head. I can't think of reason I NEED to update, I just get bored and like to play. My warranty is up so voiding that isn't an issue and my 4.1.1 runs just fine, but by playing I learn so I like to play. 4.3 has a few nice features but if prevents the phone from being re-flashed then the risks most-likely aren't worth the benefits. I am just doing my due diligence, researching and asking questions. I really appreciate all the input and advice I get from forums such as this so I can make an intelligent decision.
Click to expand...
Click to collapse
If you really want to try and want it to be reversible you can use the 4.3 leaked MJ2 bootloader if you decide you don't like the 4.3 stuff you can simply Odin back to stock. But if you use the MJB bootloader you cannot.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

theramsey3 said:
Me personally would avoid the official OTA update unless you're absolutely sure you want to keep it. Once you take the bootloader MJB you cannot flash any stock rom anymore unless you have an I747M then you can only flash the official 4.3.
I am on the MJ2 leak bootloader and have no issues, running S3Rx with the MJB modem phone runs great, if something happens I can simply flash anything I want to with Odin.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I was running the same set up with MJ2 OS on MJB modem and the system was running fine until I recently flashed TWRP and SU to root and now the phone keeps booting to TWRP. I've run reset and reboot to system several times and even reflashed the system and modem files to attempt a reset but the same thing keeps happening - booting to TWRP. Will appreciate all steers on how I can rectify this.
Thanks

Larry2999 said:
I was running the same set up with MJ2 OS on MJB modem and the system was running fine until I recently flashed TWRP and SU to root and now the phone keeps booting to TWRP. I've run reset and reboot to system several times and even reflashed the system and modem files to attempt a reset but the same thing keeps happening - booting to TWRP. Will appreciate all steers on how I can rectify this.
Thanks
Click to expand...
Click to collapse
You're on the MJ2 leak bootloader you can use Odin to flash a stock image on the phone if you can get it into download/Odin mode.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 09:31 PM ---------- Previous post was at 09:29 PM ----------
If it won't let you into download mode then format the internal SD card which should erase everything for the most part and flash everything fresh.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth

theramsey3 said:
You're on the MJ2 leak bootloader you can use Odin to flash a stock image on the phone if you can get it into download/Odin mode.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 09:31 PM ---------- Previous post was at 09:29 PM ----------
If it won't let you into download mode then format the internal SD card which should erase everything for the most part and flash everything fresh.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
Click to expand...
Click to collapse
Thanks. It does get into download mode. Is there an Odin flashable file for the MJ2 and, if so, where can I find this? I'm wary about flashing an older ROM (e.g. 4.1.1) to avoid any further conflicts as I still have the official MJB modem or can this be done safely?
I've tried clearing the system and reflashing but it was the same result or perhaps I wasn't doing this the right way?

Larry2999 said:
Thanks. It does get into download mode. Is there an Odin flashable file for the MJ2 and, if so, where can I find this? I'm wary about flashing an older ROM (e.g. 4.1.1) to avoid any further conflicts as I still have the official MJB modem or can this be done safely?
I've tried clearing the system and reflashing but it was the same result or perhaps I wasn't doing this the right way?
Click to expand...
Click to collapse
I have been told by very reliable sources that you can Odin to an older version safely regardless of modem as long as the bootloader isn't MJB or MK5 so I am pretty confident it is safe. At this point there isn't too much to loose.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 11:47 PM ---------- Previous post was at 11:42 PM ----------
While you're there I would flash 4.1.1 and do the free unlock. If my laptop charger wasn't broken I would test it for you I would love to unlock my phone.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth

theramsey3 said:
I have been told by very reliable sources that you can Odin to an older version safely regardless of modem as long as the bootloader isn't MJB or MK5 so I am pretty confident it is safe. At this point there isn't too much to loose.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 11:47 PM ---------- Previous post was at 11:42 PM ----------
While you're there I would flash 4.1.1 and do the free unlock. If my laptop charger wasn't broken I would test it for you I would love to unlock my phone.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
Click to expand...
Click to collapse
Thanks. Just tried Odining to 4.1.1 but it failed, however. Would you recommend wiping the system in TWRP and booting to download to try again?

Larry2999 said:
Thanks. Just tried Odining to 4.1.1 but it failed, however. Would you recommend wiping the system in TWRP and booting to download to try again?
Click to expand...
Click to collapse
Odining to an older ROM is apparently not an option as this is isn't working. Thankfully, the phone is still booting into both download and recovery modes without difficulty so there is hope. I flashed CWM recovery via Odin thinking the problem may perhaps be with TWRP. However, the result was the same and the phone kept booting back into recovery mode rather than to the system. I also tried to see if was the bootloader so I flashed the MJB bootloader as well as reflashed the MJ2 system zip. The flashings were successful so, at least, it's unlikely to be a bootloader conflict but still the system will not boot.
Will greatly appreciate steers from the community on how to get the thing back working. n Thanks

Larry2999 said:
Odining to an older ROM is apparently not an option as this is isn't working. Thankfully, the phone is still booting into both download and recovery modes without difficulty so there is hope. I flashed CWM recovery via Odin thinking the problem may perhaps be with TWRP. However, the result was the same and the phone kept booting back into recovery mode rather than to the system. I also tried to see if was the bootloader so I flashed the MJB bootloader as well as reflashed the MJ2 system zip. The flashings were successful so, at least, it's unlikely to be a bootloader conflict but still the system will not boot.
Will greatly appreciate steers from the community on how to get the thing back working. n Thanks
Click to expand...
Click to collapse
Finally got it back up and running today. Cant be sure what really led to the soft brick but I simply wiped out everything in TWRP mode and then re-flashed the (MJ2) system, modem and kernel zips. This time it worked, I'd tried the same thing before but without the kernel. Now I'm back to the same configuration as before.

[Q] SGH-i747m unknown baseband and imei

All, I have a rooted SGH-i747m, on which I had CM11. I replaced that with SlimBean recently, but lost my LTE. So, this morning I updated the modem to I747MUMUEND3 as is found in this thread: http://forum.xda-developers.com/showthread.php?t=1831898. Now I have no IMEI and baseband. Unfortunately I did NOT backup my EFS.
I have read so many posts and tried various things....but I just don't see any way to restore my IMEI and baseband (and get signal back!).
* I have tried a few of the other modems to no avail.
* I tried a restore from a backup I had of CM11 via CWM, but I'm guessing that doesn't backup the NVRAM settings.
* Attempts to use things like *#7284# yields "mobile network not available".
* the S3 doesn't seem to provide a COM port so I don't see how I could use NV-reader-writer even if I had a NVRAM backup file.....
Please advise.

What bootloader is on your phone? It may just be a case of a mismatch between the modem and bootloader.

audit13 said:
What bootloader is on your phone? It may just be a case of a mismatch between the modem and bootloader.
Click to expand...
Click to collapse
Not quite sure.....but I did have CM11 on there and I believe a 4.4 bootloader was installed. I ended up reinstalling stock firmware, then reinstalling slim bean and everything works now.

I'm having a similar issue, no modem and carrier support after restoring to an earlier, stock ROM than was on my phone (sgh-i747) before OTA soft-bricked it.
My bootloader is now NJ1 and I can't find or flash a bootloader_modem package to update my modem, attempt to do so fails with status 7 and baseband version remains blank... while everything else on my phone is MJB = mismatch.
I'd like to know exactly what you did to fix yours, dolhop, but it may not help me as I'm already at an NJ1 bootloader

I don't even know how to check which bootloader I am using. I simply used odin to reflash a stock from from sammobile from download mode. That worked. From there I used odin to flash CWM, then used CWM to flash in slim bean.

OCTANEJUNKIE said:
I'm having a similar issue, no modem and carrier support after restoring to an earlier, stock ROM than was on my phone (sgh-i747) before OTA soft-bricked it.
My bootloader is now NJ1 and I can't find or flash a bootloader_modem package to update my modem, attempt to do so fails with status 7 and baseband version remains blank... while everything else on my phone is MJB = mismatch.
I'd like to know exactly what you did to fix yours, dolhop, but it may not help me as I'm already at an NJ1 bootloader
Click to expand...
Click to collapse
Status 7 error can be due to an outdate recovery. Are you running the latest CWM or TWRP?
---------- Post added at 05:17 PM ---------- Previous post was at 05:16 PM ----------
OCTANEJUNKIE said:
I'm having a similar issue, no modem and carrier support after restoring to an earlier, stock ROM than was on my phone (sgh-i747) before OTA soft-bricked it.
My bootloader is now NJ1 and I can't find or flash a bootloader_modem package to update my modem, attempt to do so fails with status 7 and baseband version remains blank... while everything else on my phone is MJB = mismatch.
I'd like to know exactly what you did to fix yours, dolhop, but it may not help me as I'm already at an NJ1 bootloader
Click to expand...
Click to collapse
Status 7 error can be due to an outdate recovery. Are you running the latest CWM or TWRP?
Since you have an i747, you cannot use any firmware from sammobile.com on your phone.

audit13 said:
Status 7 error can be due to an outdate recovery. Are you running the latest CWM or TWRP?
---------- Post added at 05:17 PM ---------- Previous post was at 05:16 PM ----------
Status 7 error can be due to an outdate recovery. Are you running the latest CWM or TWRP?
Since you have an i747, you cannot use any firmware from sammobile.com on your phone.
Click to expand...
Click to collapse
Thanks for the reply, audit13
My CWM is version 6.0.2.3, not most current (6.0.4.7 is latest?) - I got CWM and Team Epic Custom Recovery v5 bundled on androidcentral when I first rooted my phone
I looked at sammobile.com and only saw 4.1.1 for ATT US and didn't even bother... I got the 4.3 stock recovery I flashed here, which resurrected by phone, but unfortunately it was already at 4.4.x, aaaaand now I've got no baseband (mismatch)

[Q] My AT&T S3 is Bricked, HELP!

I updated to Cyanogenmod 11's latest nightly of 4/26/2015 and my phone started behaving badly.
I kept losing signal and having trouble making calls and in my attempts to resolve the issue by flashing back to a previous nightly it seems I lost my IMEI and with it connectivity.
I found a video on youtube that says to access the service menu to fix it but CyanogenMod doesn't do anything when I enter the codes in the dialer so I was attempting tro go back to stock but having trouble finding a good stock rom I can use and the 2 I"ve tried both fail in odin. Then I read something about needed a pit file but flashing that fails to.
So right now I went back stop recovery but still on Cyanogenmod but the phone doesn't do anything when it boots...just no connection.
Someone told me the pros in this forum could help so here I am, help me Cell Phone Gods!!!:crying:
Got this phone info app that says bootloader is I747UCUEMJB
Update 5/5/2015 I'm on latest bootloader and running stock rom but have no data and both calling and text work randomly. 4G symbol comes on once in a while but most of the service I do get when it works is on edge network.

Sounds like your modem may be messed up.
Load a terminal app and use the app to verify the bootloader on your phone.

audit13 said:
Sounds like your modem may be messed up.
Load a terminal app and use the app to verify the bootloader on your phone.
Click to expand...
Click to collapse
how do I do that? with my pc? what's a good app to use?

Try this: boot into download and read the screen. Do you see anything about warranty bit on the phone?

audit13 said:
Try this: boot into download and read the screen. Do you see anything about warranty bit on the phone?
Click to expand...
Click to collapse
Yes, says Warranty bit 1
system status official.
What's that tell you?
btw i just went back to CWM
got this phone info app that says bootloader is I747UCUEMJB

Odin is failing with the stock ROM from sammobile because the phone has at least a 4.3 bootloader on your phone. Do not flash anything from sammobile because attempting to do so could brick your phone.
Since you're back on cwm with an mjb bootloader, try flashing the mjb modem via cwm.
http://forum.xda-developers.com/showpost.php?p=47817339&postcount=23

audit13 said:
Odin is failing with the stock ROM from sammobile because the phone has at least a 4.3 bootloader on your phone. Do not flash anything from sammobile because attempting to do so could brick your phone.
Since you're back on cwm with an mjb bootloader, try flashing the mjb modem via cwm.
http://forum.xda-developers.com/showpost.php?p=47817339&postcount=23
Click to expand...
Click to collapse
I tried flashing the modem before...I'll do it again...is that going to get me my IMEI number back or allow me to flash stock rom to recover my IMEI?

fausto412 said:
I tried flashing the modem before...I'll do it again...is that going to get me my IMEI number back or allow me to flash stock rom to recover my IMEI?
Click to expand...
Click to collapse
I did flash the modem you linked and that improved things a bit...I'm back to the original problem, I was having where my phone was having trouble staying on the network. I had even lost all my APNs in my attempts to fix. Now my APNs are back. Still showing unkown IMEI and phone isn't getting on the cell phone network.

So the baseband is now mjb?
Try flashing the latest release of CM10.2. It's possible you need to update the modem and bootloader together in order to support the newest release of CM11. I don't have an s3 so i can't confirm my theory.
You may have to try nvwriter to inject the imei as a last resort: http://forum.xda-developers.com/showthread.php?t=1804117

audit13 said:
So the baseband is now mjb?
Try flashing the latest release of CM10.2. It's possible you need to update the modem and bootloader together in order to support the newest release of CM11. I don't have an s3 so i can't confirm my theory.
You may have to try nvwriter to inject the imei as a last resort: http://forum.xda-developers.com/showthread.php?t=1804117
Click to expand...
Click to collapse
Yes baseband is MJB.
I'll install 10.2 real quick. In the past that didn't help but who knows this time.

OK. Installed 10.2.1 and still have null imei. Connects to cell networks unreliably but no data and texting.
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app

fausto412 said:
OK. Installed 10.2.1 and still have null imei. Connects to cell networks unreliably but no data and texting.
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app
Click to expand...
Click to collapse
not as smart as @audit13 , but might find some help here. good luck.
http://forum.xda-developers.com/showthread.php?t=1804117
"all i can really do , is stay out of my own way and let the will of heaven be done"

Did you confirm that your modem and bootloader match? Did you try nvwriter to inject the imei?

I believe modem and bootloader match. Haven't tried nvwriter...can't access service mode on cyanogen apparently.
What do I do now?
Sent from my SAMSUNG-SGH-I747 using XDA Free mobile app

audit13 said:
Did you confirm that your modem and bootloader match? Did you try nvwriter to inject the imei?
Click to expand...
Click to collapse
The NV Writer method, I get stuck at this point in the instructions
"*If you are running a aosp rom (cm9,cm10,aokp etc) you can use the diag method described HERE"
The link is dead so I've no idea what I'm supposed to do.

Since your imei is null, I'm not sure what else to suggest except to re-flash the existing bootloader and modem or flash a newer bootloader and modem.

audit13 said:
Since your imei is null, I'm not sure what else to suggest except to re-flash the existing bootloader and modem or flash a newer bootloader and modem.
Click to expand...
Click to collapse
There is a newer bootloader and modem?
I sure wish I had an easier time with finding out this info plus the files.

http://forum.xda-developers.com/galaxy-s3-att/general/modem-4-4-2-modems-i747-i747m-t2856577

OK, about to try to update to ne4 bootloader and modem. wish me luck!

Updated to NE4 firmware but modem file failed due to being on NE4 firmware(wth!)...obtained a different file that installed ok.
Result...still having null IMEI and no LTE...inconsistent connection issues.
I wonder if I was on NJ1 before I started messing around....

No data service

I flashed the Hyperdrive RLS16 rom on my unlocked s3 att i747 but now i only have calling and no data service. I am using this phone on tmobiles service btw. Also i have provided pics from PHONE INFO hopefully that gives some more information on what the problem is and how i can fix it. Also i flashed the at&t file when you choose the carrier
Heres the link for the rom
http://forum.xda-developers.com/showthread.php?t=2176793

[email protected] said:
I flashed the Hyperdrive RLS16 rom on my unlocked s3 att i747 but now i only have calling and no data service. I am using this phone on tmobiles service btw. Also i have provided pics from PHONE INFO hopefully that gives some more information on what the problem is and how i can fix it. Also i flashed the at&t file when you choose the carrier
Heres the link for the rom
http://forum.xda-developers.com/showthread.php?t=2176793
Click to expand...
Click to collapse
That ROM appears to have a pretty old base and uses a stock kernel, and you're phone is on relatively recent kitkat bootloader and modem. You might be able to get everything working by flashing a custom kernel.

reply
jason2678 said:
That ROM appears to have a pretty old base and uses a stock kernel, and you're phone is on relatively recent kitkat bootloader and modem. You might be able to get everything working by flashing a custom kernel.
Click to expand...
Click to collapse
Which one am i suppose to download ?

[email protected] said:
Which one am i suppose to download ?
Click to expand...
Click to collapse
This one is the most up to date. It's Perseus' unofficial version.
Make a backup of boot using your recovery before you flash the kernel. It will be very fast; probably a 10 - 20 MB backup. Then flash the new kernel. That way if you bootloop or it doesn't work out for some reason, you can boot back into recovery and restore that backup of boot to get back to your original kernel.
If that doesn't work, you can try some of the other touchwiz kernels, or just update to a more current ROM.
---------- Post added at 02:43 PM ---------- Previous post was at 02:36 PM ----------
[email protected] said:
Which one am i suppose to download ?
Click to expand...
Click to collapse
Before you mess with kernels, have you made sure you're on the right APN for T-Mo? Just thought I'd ask since that ROM supports a wide range of carriers.

reply
yes apn settings are corect

i flashed persues kernel but now the phone boots up and shows a black screen

[email protected] said:
i flashed persues kernel but now the phone boots up and shows a black screen
Click to expand...
Click to collapse
You should be able to get back into recovery and restore the backup you made of boot to restore your original kernel, or just flash the ROM zip over again. Either way will get your ROM working again.
I suspect that old 4.1.2 jellybean ROM you're trying to run just doesn't have right ril libs/binaries to work right with the kitkat-gen modem on your phone. Did it let you edit APN's and show your IMEI in the ROM? Either of those not working is usually a sign the ROM just doesn't know how to work with the modem on the phone.
You'll probably have better luck if you switch to a newer touchwiz ROM based on the NE4 ROM that matches the firmware on your phone or an AOSP ROM.

will a rom like this one work ?
http://forum.xda-developers.com/showthread.php?t=2725192

[email protected] said:
will a rom like this one work ?
http://forum.xda-developers.com/showthread.php?t=2725192
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You are on a 4.4 bootloader and modem. That ROM says you need a 4.4 bootloader and modem in big red letters right in the OP. I think it should work with the firmware on your phone. :good:
---------- Post added at 03:16 PM ---------- Previous post was at 03:02 PM ----------
Whatever you do, do not try to downgrade your bootloader and modem to work with older ROMs. Not sure if you've read this about this phone yet or not, so I'll put it out there. The 4.3 and 4.4 bootloaders and modems (MJB, NE4, NJ1, & NJ2) always need to be matched. Some people have reported hard bricks trying to flash a modem that doesn't match their bootloader, and those 4.3 and 4.4 bootloaders cannot be downgraded. The result of attempting to downgrade those bootloaders is always a hard brick.