Xperia PRO - no network with any SIM, radio brick ? Any fix possible ? - Xperia Arc Q&A, Help & Troubleshooting

Hi guys,
I had an Xperia Pro updated to ICS 4.0.4 stock, everything was working ok, one morning at work I couldn't get any signal in any part of the building, removed SIM and placed in a different phone, it was getting some signal, back to Xperia Pro, no signal again and when picking manually one of the networks was giving an error message ( like ... network unavailable or check if SIM inserted ), tried activating - deactivating plane mode, still no change, at a certain moment it rebooted by itself, but still no change.
Went home, tried a different SIM, same thing, did a factory reset of the phone, still same error and won't join any network.
Thought, OK it's time to try a different ROM, maybe more luck.
So unlocked bootloader, flashed Cyanogenmod 7.2, install went OK and all, but still the same problem, it won't join any network with any SIM I put in.
What can I try next ? Anyone has any idea ?
Thanks for any suggestion or advice

I think there is a problem with the hardware.
with JJHyb_v3.2

arcs_austria said:
I think there is a problem with the hardware.
Click to expand...
Click to collapse
Hmmm ... it was in my pocket while going to work, I later noticed the lack of network signal, but there wasn't any shock or whatever, just regular commute from home to office.
Additional Info: I've remember something that might be relevant: after the reboot in CM7.2 it kept asking for the SIM unlock PIN I think, and it didn't work with the PIN that I knew the SIM had, after a couple tries I clicked "reject" to avoid locking the SIM.
Not sure if it means the phone become locked ?! should I try to unlock it ? It was normally already unlocked before, not sure if it makes any sense what I'm imagining here ...

Try full reflash using Flashtool
Sent from my ICS-powered arc S. From Austria! You don't know Austria? Google!
PS: Thank or PM me if you like the Rubiks Cube!

papayayoghurt said:
Try full reflash using Flashtool
Click to expand...
Click to collapse
WIll try that, but do you mean full reflash to ICS or CM7.2 ?

Try flashing an original Sony ROM with flashtool.
Sent from my LT18i using xda app-developers app

Cuerrix said:
Try flashing an original Sony ROM with flashtool.
Click to expand...
Click to collapse
OK, thx, downloading rom as we speak.

oh, but what's the difference between Central_Europe and Baltic tft ? don't know which one should I use ...

Its the country where its for, but you can use both.
All unbranded FIrmwares work everywhere
Sent from my ICS-powered arc S. From Austria! You don't know Austria? Google!
PS: Thank or PM me if you like the Rubiks Cube!

papayayoghurt said:
Its the country where its for, but you can use both.
All unbranded FIrmwares work everywhere
Click to expand...
Click to collapse
Oh, I see, thank you ! I'm in France which is neither Central nor Baltic, hence my confusion

You can use both.
Sent from my LT18i using xda app-developers app

Cuerrix said:
You can use both
Click to expand...
Click to collapse
I used the Central Europe because the file has a slightly newer date.
Had problems with using Flashtool under Windows, probably some driver wasn't correctly installed as my computer was freezing every time I connected in flashmode. Fortunately I have a dual boot and it worked under Ubuntu.
But no luck, still no service after back to ICS.
But I found some other thread on the net that pointed to check mend, and guess what ... doing a report resulted in "Currently blocked - CheckMEND has a record of this item having been blocked by one or more cell phone networks"
Now ... wtf can I do next ?!

Ask your Carrier for help, maybe they now something
Sent from my LT18i using xda app-developers app

Cuerrix said:
Ask your Carrier for help, maybe they now something
Click to expand...
Click to collapse
Tried a couple of them, either they say they can't do anything ( if I don't have a contract with them ), or one operator told me have no blockage or record of this IMEI.
So ... more and more confused and clueless ...
getting into the SIM Lock menu of the phone ( using the *#*#-whatever-#*#* combination ), every digit is 0, I've read that it means it's "hardlock" but not sure what exactly this means and especially how can it be unlocked ?!

goto service center

flsmidth said:
goto service center
Click to expand...
Click to collapse
You mean a Sony repair center ?
Good idea, thank you, I'll try to find one.

LoveQwerty said:
You mean a Sony repair center ?
Good idea, thank you, I'll try to find one.
Click to expand...
Click to collapse
Any luck m8?
I have the same problem in Portugal but only with one carrier (TMN). Already order a CheckMEND report and "0 reports in my case".
Flashed different ROMS, Kernels, changed baseband and... nothing! Back to stock ICS and still no TMN signal for calls or SMS... I have 3G for internet though...

Gsantoz said:
Any luck m8?
I have the same problem in Portugal but only with one carrier (TMN). Already order a CheckMEND report and "0 reports in my case".
Flashed different ROMS, Kernels, changed baseband and... nothing! Back to stock ICS and still no TMN signal for calls or SMS... I have 3G for internet though...
Click to expand...
Click to collapse
same problem on xperia play...i get error mm#6,but phone isn't locke nor reported stolen...i have the yellow triangle in the status bar at left, no signal, i can't make calls or text , but i have data connection, i can go to play store and download apps, browser facebook etc..any fix for this?

Related

Sim locked after flashing

Hi,
I have an Acer Liquid E for half a year now, and decided to flash a custom ROM on it.
I Flashed it with LiquidNext without any problems, but my GPS software didn't work on it.
So i flashed it back with a standard ROM.
The problem starts here...
The ROM I found, downloaded an flashed my phone with, was one for Fido devices only.
I didn't notice the message that it's for Fido phones only in the thread of that site *dumb me*, so I flashed the Fido ROM to my Liquid E *still dumb me*.
Problem is: My phone asksk for a code to unlock my sim card, because it thinks it is a Fido device...
I don't have such code, so I have a huge problem.
I already paid for a code, but I still have to hear that my phone has no matching unlock code.
Pretty obvious, because my phone is not a standard Fido phone, so the IMEI code has no match.
But my question is: How can I unlock my device?
I already tried:
www .acer-club. fr/viewtopic.php?f=89&t=814
(remove space after www and before fr; can't post links yet)
and also to put another ROM on it.
But nothing seems to help.
Can one of you pro's help me?
Thanks in advance!
Prokonobi
Anybody please?
Id like to know where you found the fido rom
Sent from my LG-P990 using xda premium
Hi,
I got it from here:
android.modaco. com/topic/323264-acer-liquid-e-official-android-22-froyo-rom-fido
(remove space before com)
cheers
buy a code they are 7 dollars which is pretty cheap for your phone.
cobby911 said:
buy a code they are 7 dollars which is pretty cheap for your phone.
Click to expand...
Click to collapse
I did. I tried 5 different services (ebay, unlock sites...), but no one could help.
Everybody refunded the money because they couldn't find a code for my phone.
They say that it's because it was no Fido phone at first, so there is no code availiable.
cheers
Can you just not put another rom on your phone and try it then or will it still be locked
cobby911 said:
Can you just not put another rom on your phone and try it then or will it still be locked
Click to expand...
Click to collapse
I tried several different ROM's, but the phone is still locked.
I tried LiquidNext, Liquid-Community-Rom and even the standard acer ROM.
Maybe the rom is corrupted try to DL it again and also ...when had you flashed your phone hade you removed the sim?????
s1m1 said:
Maybe the rom is corrupted try to DL it again and also ...when had you flashed your phone hade you removed the sim?????
Click to expand...
Click to collapse
No, I didn't remove the sim, didn't thought it was necessary. But the SIM works fine on my old nokia, so that's not the problem I think.
I already tried to download it again, but it doesn't help.
I've read somewhere that it could be the radio ROM. Is this possible?
cheers
pay service center to get it done if flashing roms do not help you.....
or there are methods i saw for my device but they are too sensitive that bricked many phones
Prokonobi said:
Hi,
I got it from here:
android.modaco. com/topic/323264-acer-liquid-e-official-android-22-froyo-rom-fido
(remove space before com)
cheers
Click to expand...
Click to collapse
Thanx man and good luck
Sent from my LG-P990 using xda premium
madman_amit said:
pay service center to get it done if flashing roms do not help you.....
or there are methods i saw for my device but they are too sensitive that bricked many phones
Click to expand...
Click to collapse
pay service center = shop where I bought it?
Because it's an Acer phone, and the devices from acer take months to get repaired and sent back to you...
good luck I hope someone on the site can help ya
did you try using any other sim on your acer !!
if no sim works , it may also be the hardware fault or your sim reader may be busted !!
Maybe this is the solution
Yesterday evening i have installed a new "OS" in my phone (samsung Ace).The Os
is Glsmt v2.1 and i had your same problem but i solve it because there was a
theme that hide the unlocking of Sim.Now if your Os have a default theme try to
disabled it and unlocking the sim with PIN code.Please let me know if you solved
@aaki_rocker
I tried other sim, but still the same...
Hardware is not broken, because he sees the sim, but just can't connect to the network.
@s1m1
No themes availiable that can disable the sim lock...
Any more suggestions?
(thanks for the great help so far!)
Sorry for the double post, but it seems that it could be solved by flashin the stock radio rom.
So if anyone could help me with the stock radio rom, I would be thankful!

[Q] My Arc is VERY unhappy ...

Hi all.
On Saturday night my Arc (debranded Rogers, locked BL, rooted with zergrush, running 2.3.4 on firmware .42) was running just fine. We were out at a friend's place and I was calling up photos, doing Web searches, no problem. Then yesterday when I turned the beast on it went into in a bootloop - SE logo, blank screen, SE logo, blank screen ...
I managed to boot into CWM to be able to turn it off, but that was as far as I got (and after a wasted afternoon trying to reflash I can't even get to CWM now).
PCC/SEUS are no help at all - after going through the 'Repair phone' process PCC says there's 'no software available for your phone yet'. I've tried reflashing generic f/ware with both Wotanserver and Flashtool 0.6.8.0; with Flashtool I get the same "Final data verification failed" error as reported recently here with an X10 after 99% complete. And this message from the bottom of the log makes me suspicious Flashtool wants me to change mode, which is just a little tricky when I can't start the phone:
INFO - For 2011 devices line, be sure you are not in MTP mode
Current status is the phone boots to the SE logo, then displays an image of an exclamation mark over a phone - one of the least informative images I've seen, unless it represents a tombstone, which seems very possible! - then dies again.
I've looked at a couple of other XDA threads about bricks; the most promising-sounding one was talking about unlocked bootloaders, though, so I didn't try to flash the file they were talking about.
I might feel slightly better if I'd done something - anything! - like an OTA update or whatever to cause this, but all I did was turn the thing off for the night, as I always do.
Please, somebody: help!!
Thanks, in great anticipation.
Didcha tr y reflashing rom or kernel? Also factory reset might help.
Sent from LT18i @ Xda Premium
Thanks, ArmorD.
Just ROM - I can't do anything with the kernel with a locked bootloader, can I?
I'd try a factory reset if I could get into CWM, but I can't. I tried the reset method from here, but the phone still just goes to the SE logo, then the 'tombstone'.
Open to pretty much anything at this stage!
Well, what you can do is i think re-flash it with Update service, it might work than.
Here is the link to update service since you wont find it in SE website.
http://www.mediafire.com/?mkk2w0os8ak1dzf
:S Nvm. You already have tried update service. didn't saw it when i read it first..
Bro, just reflash the system
I have just ended up with a boot loop on my arc.. I reflashed and it worked well!
-cheers
untouchable123 said:
... I reflashed and it worked well! ...
Click to expand...
Click to collapse
So did I, and it didn't! But thanks anyway.
Further news: trying to eliminate possible causes, I've had the SD card checked (by inserting it in another device). It's quite readable. I didn't really think this problem would have anything to do with the card, but it seemed worth trying.
Well, idk. Sorry bro! Try to flash stock firmware with flashtool! And it might work! Also bricked=phone is not turning on at all! Like u press the power button and nothing is happening. Cheer up man u finally gonna fix it. ;-)
Sent from my LT18i using XDA
i have encounter tha triangle with ! inside and a phone beside it, it happens when i tried flashing my phone using wotanserver,i want to root my phone and tried to downgrade to .42 taiwan ftf,but the file in wotanserver is maybe damage and did not finish flashing,then i got that "tombstone" icon.
what i did was flash it with uk tft .42,and it restored my arc s,after that i flash it again with .62 taiwan ftf since i live in taiwan, i dont know if this will work on your phone. or maybe you already tried doing it. i just want to share what i happen to encounter. hope you fix your phone.
Untouchable: thanks - I wish I shared your faith!
asderth8000: thanks also. I tried a different firmware version tonight (US generic; previously World; also tried Australian) but same result - Wotan dies with 'ERROR: File write failed' while writing userdata.s08. It feels like that's close to the end of the process, which suggests Wotan and Flashtool are both getting hung up at the same place. Screenshot of Wotan error atatched - hope it gives somebody some ideas.
I appreciate your help, people. Keep them thoughts coming!
lol bro stop using Wotan use Flashtool!!!!!!! lol my faith is beyond the limit. I have bricked & ubricked my cell a couple of times;-)
Sent from my LT18i using XDA
I got that same error using .42 Taiwan ftf, maybe try UK, it works fine with me although I don't live in UK.
I remember mine was on userdata.07 when an error occured,I thought at first that it was my connection then I tried doing it again and it failed, then I tried the UK version and it goes well. Save your apn settings too.
Anicane said:
Well, what you can do is i think re-flash it with Update service, it might work than.
Here is the link to update service since you wont find it in SE website.
http://www.mediafire.com/?mkk2w0os8ak1dzf
:S Nvm. You already have tried update service. didn't saw it when i read it first..
Click to expand...
Click to collapse
Update service is available again for some time!
http://www.sonymobile.com/gb/tools/update-service/
---------- Post added at 05:15 PM ---------- Previous post was at 05:13 PM ----------
This package has saved me before, even for things it isn't meant for. Worth trying, won't do any more damage I think.
http://forum.xda-developers.com/showpost.php?p=14774499&postcount=1
It's BAAAACK!
First, and most importantly: I have a phone again.
The eventual answer was this thread, suggested by sdk16420. I hadn't tried it before because it was talking about unlocked bootloaders, but I fired it up this morning and ... guess what? I've spent most of the day restoring things, but I'm pretty much there - even rooted again (lost that along the way). The phone says there's an OTA update for .62 ready, but that failed and PCC doesn't believe it exists. Ah well, there's always something ...
Secondly: huge thanks to the XDA community for your support and suggestions. You guys are OK!
Loosely said:
First, and most importantly: I have a phone again.
The eventual answer was this thread, suggested by sdk16420. I hadn't tried it before because it was talking about unlocked bootloaders, but I fired it up this morning and ... guess what? I've spent most of the day restoring things, but I'm pretty much there - even rooted again (lost that along the way). The phone says there's an OTA update for .62 ready, but that failed and PCC doesn't believe it exists. Ah well, there's always something ...
Secondly: huge thanks to the XDA community for your support and suggestions. You guys are OK!
Click to expand...
Click to collapse
No prob bro;-) ask anything u want and we will try to help;-)
Sent from my LT18i using XDA
PLEASE HELP - Potentially bricked LT18i
slightly different similar problem:
LT18i, 2.3.4 build .62.. or it was!
Wares used: SE Bootloader Lock/Unlocker, Flashtool
Flashtool really should come with a lot more documentation and user guide: I'm a software person, but C++ is my confortable realm!
Managed to flash CWM on there and got it stuck in a bootloop of CWM (trying to install RootXperia.zip): tried many other images, the best I can get is a Sony Ericsson Logo looping.. I guess my SD card is okay.
Can't find an up to date, stock, 2.3.4 build .62 to repair my phone..
Help! A Walkthrough of my problem helps me rinse my degree and this equates to thanks and donations, I am a desperate man right now!
Please hassle me for info, help me help you help me!!
My Arc is Crying too!
PS that r800i ROM didn't work for me!
WHAT I NEED FROM YOU LOVELY PEOPLES:
-A link to the stock ROM or LT18i .62
-noobproof couple of steps to explain flashtool 0.6.8.0
-noobproof steps of how to flash the stock ROM/Kernel back in place
Hope you can help me.. my first flash went entirely squiffy!
Thanks in advance!
Omg plz ignore my noob self, except massive props to doomlord.
Sent from my LT18i using XDA

[Q] Help with L35H

Hello,
I recently tried to update my Xperia ZL L35H (purchased in China) to the latest 10.3.A.0.423 firmware. I chose the C6502 variant because it seemed that this was the same model with some regional variations. All worked well, until I tested the mobile data connection, which was non-existent. Considering that both L35H and C6502 both use HSPA, this incompatibility with the C6502 firmware was surprising. I even used the AOKP ROM for awhile and had no issues with data connectivity.
What's worse, I had my CWM backups on internal storage. My bad, I know. Updating to the 10.3.A.0.423 erased my internal storage, so, no more stock firmware backups.
I would be most grateful if some one could help me either:
*Help me find a L35H firmware, or
*Help me troubleshoot the data connection on the C6502 10.3.A.0.423 firmware.
L35h
Glad to see someone else has the L35h. I'm afraid I can't help you with your problem, but I was wondering if you were able to root it, and how?
I rooted mine with Bin4ry's script, but then made the mistake of upgrading, not knowing that it would remove the root. (I'm completely new to Android and had no idea that the phone would come with a bastardized version of Android that doesn't even allow a Google account to be on it, without rooting.) Now I'm on 10.1.1.A.1.253, but none of the rooting scripts will root it now.
I rooted the 253 using :
http://www.droidkube.com/how-to-root-sony-xperia-zl-and-install-cwm-recovery/
Then lost root after updating to 10.3.A.0.423. I rooted that using:
http://forum.xda-developers.com/showthread.php?p=43288981
Thanks, I might have to do it this way ultimately. I'm afraid of destroying my phone completely, but maybe it's the only way I'll be able to do it.
Thorc said:
Glad to see someone else has the L35h. I'm afraid I can't help you with your problem, but I was wondering if you were able to root it, and how?
I rooted mine with Bin4ry's script, but then made the mistake of upgrading, not knowing that it would remove the root. (I'm completely new to Android and had no idea that the phone would come with a bastardized version of Android that doesn't even allow a Google account to be on it, without rooting.) Now I'm on 10.1.1.A.1.253, but none of the rooting scripts will root it now.
Click to expand...
Click to collapse
Maybe you could help me out here. What 253 variant did you use? Does everything work on it? What shows for "Model Number" under "About Phone" in settings? Could you post a download link for me?
I got it to work. I'm currently using the C6503, but the C6502 might have worked as well.
The key in to go into Settings/Xperia and click on "Internet settings". Afetr a brief download, my 3G data was back!
Everything appears to be working fine! No more L35H!
Dr_SUSE said:
I got it to work. I'm currently using the C6503, but the C6502 might have worked as well.
The key in to go into Settings/Xperia and click on "Internet settings". Afetr a brief download, my 3G data was back!
Everything appears to be working fine! No more L35H!
Click to expand...
Click to collapse
Where did you get the 10.3.A.0.423 firmware? I've decided I'm going to use Flashtool and just go for it. Would be nice to say zaijian to L35h.
Thorc said:
Where did you get the 10.3.A.0.423 firmware? I've decided I'm going to use Flashtool and just go for it. Would be nice to say zaijian to L35h.
Click to expand...
Click to collapse
Instructions here
Downloads here
You have to register and log in to activate the download link on the xperiablog page. Both the C6503 and the C6502 worked for me. Supposedly, the C6503 adds LTE support, but I don't know if there's a hardware difference to reflect that. I've been using this firmmware for a week now, and it's been flawless.
Also, check out Doomlord's easy rooting toolkit (for root) and XZDualRecovery (for CWM and TWRP) here on XDA, both of which work flawlessly on this firmware as tested on my device.
Check out my post on this page if you're disappointed with the stock sound volume limitation.
And don't forget the "thanks" button if you appreciate my help
Thanks so much! Which country firmware did you use? I was wondering if I should go with Germany, Indonesia, or US.
Thorc said:
Thanks so much! Which country firmware did you use? I was wondering if I should go with Germany, Indonesia, or US.
Click to expand...
Click to collapse
I'd go with whichever one matches where you're at. I'd have to look it up to know for sure. Both the Indonesia and the MEA (Middle East?) ones worked on mine, and I'm in China. Some locations use the same bands, others don't. I'm no expert in how that works. I might be wrong here, but I think the Settings/Xperia/Internet Settings auto-patch takes care of that for you. My 3G (or any data connection) didn't work until I took care of that.
Dr_SUSE said:
I'd go with whichever one matches where you're at. I'd have to look it up to know for sure. Both the Indonesia and the MEA (Middle East?) ones worked on mine, and I'm in China. Some locations use the same bands, others don't. I'm no expert in how that works. I might be wrong here, but I think the Settings/Xperia/Internet Settings auto-patch takes care of that for you. My 3G (or any data connection) didn't work until I took care of that.
Click to expand...
Click to collapse
I'm in China as well, so I'll go with the Indonesia one too, especially since I know it worked for you. Thanks again for the help!
It worked! Took a while to figure out the drivers and stuff, but it flashed easily and now I have a non-bastardized, non-Chinese phone. Seems to run faster and smoother too. Great to say goodbye to the L35h and hello to the C6502!
Thorc said:
It worked! Took a while to figure out the drivers and stuff, but it flashed easily and now I have a non-bastardized, non-Chinese phone. Seems to run faster and smoother too. Great to say goodbye to the L35h and hello to the C6502!
Click to expand...
Click to collapse
Good to hear. If it starts bugging out on you, let me know so I can verify it or reproduce the bug on mine.
Thorc said:
It worked! Took a while to figure out the drivers and stuff, but it flashed easily and now I have a non-bastardized, non-Chinese phone. Seems to run faster and smoother too. Great to say goodbye to the L35h and hello to the C6502!
Click to expand...
Click to collapse
How's your automatic backlight working? Does it dim/brighten automatically?
Dr_SUSE said:
How's your automatic backlight working? Does it dim/brighten automatically?
Click to expand...
Click to collapse
Haven't noticed any problem like that. Or any real problems. Maybe the notification/SMS sounds are a bit wonky, but nothing that's really bothered me or is especially noticeable. Am still getting notices about how "this version of Android doesn't allow in-app payments" or something like that. I expected those to go away. But maybe it's just because I'm in China with a China Mobile SIM.
Hi Guys! I too brought sony xperia L35H from china....and would like to flash the MEA C6503 version. I installed the flash tool and made the FTF file ready. while just to make sure everything is alright i connected my phone and opened the flash tool. It says "device connected with USB debugging off", although i have enabled usb debugging in my phone. Do i have to install the adb as well or am i missing something. Any help is highly appreciated! Thanks
EDIT- SOLVED

[Q] {PRO} Roaming, no 3G/H data after flashing any ROM

I have a MK16a and have happily unlocked the bootloader and flashed a new kernel over the stock ROM; I have the latest baseband installed.
Any time I try to flash another ROM, I can't get mobile data to work. I show as Roaming, and can connect to GSM but nothing else. APN settings are good. Flashing a different kernel doesn't seem to help either. I tried re-flashing the stock ROM and then a kernel and then the ROM I wanted, didn't work. I tried doing a Factory Reset over the stock ROM that works and flashing another ROM, didn't work. If I restore the backup I made before doing any of this, everything works again - I just can't get any other ROMs to work!
I've searched XDA and other sites pretty extensively and I'm not coming up with anything. Anyone got any ideas?
If you can, ask operator to change your SIM. Should be a few minutes process at the store. I had same issue a year ago as well, although I left the country already, so it was not a problem.
Just a note, that all questions should be posted in Q&A section.
Someguyfromhell said:
If you can, ask operator to change your SIM. Should be a few minutes process at the store. I had same issue a year ago as well, although I left the country already, so it was not a problem.
Interesting idea. I know the SIM works ok with the carrier-provided ROM on the phone, but it is a fairly old SIM card. Night be worth trying, tahnks for the suggestion!
Someguyfromhell said:
Just a note, that all questions should be posted in Q&A section.
Click to expand...
Click to collapse
*facepalm* Yes, of course they should.
Click to expand...
Click to collapse
Any luck yet?
If still same situation, make sure you are using baseband from MK16a firmware, not MK16i.
If your carrier is so-called virtual network operator, you may need to enable national data roaming in the settings. It's available in the mobile network settings at least in CyanogenMod ROMs.
--Ere
Someguyfromhell said:
If you can, ask operator to change your SIM.
Click to expand...
Click to collapse
Finally got around to doing this! Updating the SIM (which we figured out was probably between 5 to 8 years old) has resolved the issue.

[Q] 4G Lost After Flashing Firmware

Hi everybody,
I'm totally new in this flashing world and I was messing around with my new Xperia Z1 Compact trying to get Kit Kat installed because when I bought the phone it came with JB 4.3. I flashed Latest KitKat Nordic 14.3.A.0.757 unbranded, and everything worked like a charm until I discovered that I lost 4G connection (It only connects to 3G). I went to settings to select network, and LTE is checked.
I was reading about this matter and it seems that nordic ROM doesn't support LTE Band 7 (2600Mhz) which is the band in my carrier. I tried flashing Central Europe Rom and Global rom for journalists found here in the forums. None of them seems to support my LTE band. I want to know if there is any way to recover 4G changing any setting or if you know a link to any generic ROM compatible with LTE Band 7 (2600Mhz), or if there is any way to revert to my original Jellybean 4.3 ROM using PC Companion or Sony Update Service. Any help will be very apreciated.
Hello,
I am using the Generic UK .757 on a BAND4 LTE network in Canada.
you have checked off the first thing to do from the checklist..
second is to make sure your APN settings are correct.
All these are simple, but if still no luck, some labour is in order.
Need to do full wipe and clean re-install
IF you are not rooted, just launch Sony PC companion with the phone NOT CONNECTED and do a repair. It should by default take you to KK
At the time of flashing, You probably had the wrong boxes checked and unchecked in the WIPE and Exclude boxes..
I'll try the two options
Thanks guys for the responses.
First I'll try to flask UK ROM to see if finally I get kitkat working on my phone. If this doesn't work I'll take the second option with PC Companion to restore the original ROM. I'll post the results.
It seems this rom doesn't work for me
GuizmoPhil said:
Hello,
I am using the Generic UK .757 on a BAND4 LTE network in Canada.
Click to expand...
Click to collapse
Hi Phil,
I found UK rom in this forum ver. .681 and flashed it, then I downloaded OTA update to .757. So far the problem remains. I discovered that I was wrong about My LTE Band, is 7 not 4. Apparently there's a carrier in UK with band [email protected] same as here (Colombia), so theorically this rom should work, but this is not the case. I'm trying to change more settings without luck. If you know something to help me, it would be very appreciated. Thanks.
Y2j-Hotaru said:
Hi Phil,
I found UK rom in this forum ver. .681 and flashed it, then I downloaded OTA update to .757. So far the problem remains. I discovered that I was wrong about My LTE Band, is 7 not 4. Apparently there's a carrier in UK with band [email protected] same as here (Colombia), so theorically this rom should work, but this is not the case. I'm trying to change more settings without luck. If you know something to help me, it would be very appreciated. Thanks.
Click to expand...
Click to collapse
Try changing it from the ussd *#*#4636#*#*
Sent from my C6902 using XDA Free mobile app
not able to download original rom
jewelkobayashi said:
you have checked off the first thing to do from the checklist..
second is to make sure your APN settings are correct.
All these are simple, but if still no luck, some labour is in order.
Need to do full wipe and clean re-install
IF you are not rooted, just launch Sony PC companion with the phone NOT CONNECTED and do a repair. It should by default take you to KK
At the time of flashing, You probably had the wrong boxes checked and unchecked in the WIPE and Exclude boxes..
Click to expand...
Click to collapse
Hi jewelkobayashi,
I tried the method you wrote, but, despite the phone being disconnected, it downloaded the same ROM that I recently have flashed (GLOBAL .757 commercial and Journalist). Is there any other way to download the original Phone ROM . I know my original ROM is GLOBAL-14.2.A.1.114 and the customization number is 1281-3723. I haven't found any site to download this exact firmware. If you know something, it would be very appreciated. Thanks in advance.
Are you sure about your customization number? Because it gets changed if you flash another firmware. Here's everything you need to know: http://forum.xda-developers.com/showthread.php?p=52011642 to download your firmware. By the way, what's your country, branding and SI-Number (so I can add your customization number to the list)?
Y2j-Hotaru said:
Hi everybody,
I'm totally new in this flashing world and I was messing around with my new Xperia Z1 Compact trying to get Kit Kat installed because when I bought the phone it came with JB 4.3. I flashed Latest KitKat Nordic 14.3.A.0.757 unbranded, and everything worked like a charm until I discovered that I lost 4G connection (It only connects to 3G). I went to settings to select network, and LTE is checked.
I was reading about this matter and it seems that nordic ROM doesn't support LTE Band 7 (2600Mhz) which is the band in my carrier. I tried flashing Central Europe Rom and Global rom for journalists found here in the forums. None of them seems to support my LTE band. I want to know if there is any way to recover 4G changing any setting or if you know a link to any generic ROM compatible with LTE Band 7 (2600Mhz), or if there is any way to revert to my original Jellybean 4.3 ROM using PC Companion or Sony Update Service. Any help will be very apreciated.
Click to expand...
Click to collapse
Stop flashing random ROMs and check your settings! Unless you have a different model phone than the rest of us (there are three, D5503, M51w and SO-02F), then ANY Z1C (D5503) ROM will work, but they come with different APN lists as bundling every carrier in the worlds APN settings would be a waste of space. Go to Settings > Mobile Networks > Access Point Names, and edit or create the correct APN in there. Look at a friends phone or on your carriers website for the correct settings. This is your problem, no doubt about it.
Please note that some carriers (mine included) have a special APN for LTE. E.g. standard is internet.tele2.se, LTE is 4g.tele2.se on my carrier.
...I have no idea where you're getting your data from, because literally every LTE network in the Nordics uses band 7.
Finally it worked
Rekoil said:
Stop flashing random ROMs and check your settings! Unless you have a different model phone than the rest of us (there are three, D5503, M51w and SO-02F), then ANY Z1C (D5503) ROM will work, but they come with different APN lists as bundling every carrier in the worlds APN settings would be a waste of space. Go to Settings > Mobile Networks > Access Point Names, and edit or create the correct APN in there. Look at a friends phone or on your carriers website for the correct settings. This is your problem, no doubt about it.
Please note that some carriers (mine included) have a special APN for LTE. E.g. standard is internet.tele2.se, LTE is 4g.tele2.se on my carrier.
...I have no idea where you're getting your data from, because literally every LTE network in the Nordics uses band 7.
Click to expand...
Click to collapse
Thanks for your response. I verified APN settings with friend's phones and it was identical. Finally I called my carrier's help desk and after some try/error setups with them, they gave me an alternate APN that worked until I came home where 4G icon dissapeared again. Then, I was surprised with helpdesk response when I called them again. "There is no 4G coverage in your home area". O.O What is intriging to me is that the phone displayed 4G all the time when I just bought it (Even with restarts and wherever i was) and this changed only when I flashed a generic rom. Is just a silly assumption, but, is possible that carriers can make things like force 4G icon in their custom roms to make advertising or something like that? Just asking. Anyway, Thanks a lot for the responses.
crohit911 said:
Try changing it from the ussd *#*#4636#*#*
Sent from my C6902 using XDA Free mobile app
Click to expand...
Click to collapse
Emmm do you have a manual to how to use the ussd??
I went into it to check it out, I touched I don't know what...
And now I can no longer connect to my network provider...
(reboot doens't helps, changing to wdmca or gsm or other options doesn't changes, VPN seems ok, I have no signal... )
Help!!!
Ok, this is what I did to screw it all
Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band
-> I no longer have WCDMA or GSM connection :S
(LTE still works...)
Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?
EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
emilic said:
Ok, this is what I did to screw it all
Go to the ussd *#*#4643#*#*
Go to phone info
Go to setings and Select radio band
It gives me the option of GSM/UMTS band = USA Band
-> I no longer have WCDMA or GSM connection :S
(LTE still works...)
Now, how do I go back to my previous options? or does it has nothing to do with it, and the problem is something else?
EDIT> problem solved, I had to reflash my ftf by just updating the FOTA (not sure I needed this...) and the BASEBAND... Now I am back up and running again.. >D
Click to expand...
Click to collapse
Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.
Sent from my C6902 using XDA Free mobile app
crohit911 said:
Good to know that your problem is solved, even better you solved it yourself. Sorry for not being able to help, I don't know about that ussd code I shall try.
Sent from my C6902 using XDA Free mobile app
Click to expand...
Click to collapse
Actually, there's an app in Google Play that is a shortcut to this ussd code : 4G LTE SWITCH

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