Develop Bugs

No Connection To Network After Update

Hi Frineds,
Sorry for my poor English.. I have a very strange problem after updating new firmaware on my Arc. When i flash new firmaware, my phone doesn't connect to network. I get an error that "sim card preventing to connect with network". I have tried everything but always get this error with new firmaware. Therefore i am still on .145. I have unlocked bootloader, so i use FlashTool. I have tried Global Generic & Nordic versions of new firmaware.
Am i the only one having this problem? Can someone think of any possible reason for that? Any idea?

+1 I am Spanish and I have a Vodafone mobile

Does anyone know any possible reason? Any suggestion, please?

I updated my bro's Arc with FlashTool & he has not any problem with network.. I used my sim card in his Arc & it worked like a charm. What's wrong with my Arc?

Mano1982 said:
Does anyone know any possible reason? Any suggestion, please?
Click to expand...
Click to collapse
Are you preserving your data on flashing? If so that might be the reason.

harfot said:
Are you preserving your data on flashing? If so that might be the reason.
Click to expand...
Click to collapse
No, data wiped But Thanks Harfot you tried to help me out

I was also having trouble with flashing as follows,
After flashing (not wiping user data) generic 4.0.A.2.368 followed by DooMKernel v02 the hole lot was working - not very well but working. Problem was I was not able to install neither BusyBox nor APP2SD.
This was followed by 2 more tries flashing but it never worked but I was shure it could work.
So I flashed the original 3.0.A.2.181, used GingerBreak to root and installed BusyBox. It worked.
Then I again flashed generic 4.0.A.2.368 followed by actual DooMKernel. It worked and BusyBox was still working. Then I installed APP2SD and on reboot that part worked also. At last I restored my user apps with Titanium and the were all moved to the new ext3 partion on the SD card.
Later I have flashed the latest two DooMKernels without any problems.
It might be worth for you to try reflashing.

Reflashing the firmware should solve your problem.

Thanks Harfot & Xtacy! i have actually reflashed my phone multiple times.
1) First Global Generic with FlashTool..
2) Tried Again Global Generic with Flashtool (Without Sim Card in Mobile)
3) Tried WotanServer & flashed Nordic version..
4) Re-locked bootloader & flashed again Global Generic
5) Flashed Nordic Telia version
6) Re-locked bootloader again & changed customization number to Telia Sweden & flashed through SEUS
7) Falshed UK Generic
And result is the same: No network connection

Do you have the possibility to try with another SIM card?

I relocked bootloader today & flashed phone through SEUS first. When i started phone, i got network connection but after just 5 minutes disconnected again & nothing helped. I repaired phone with PC Companion but result is the same..
When i say network connection, i mean GSM Connection.. I can't get GSM connection & therefore can't call someone or send sms..
@Harfot: First i used my SIM in my bro's Arc which is on newest firmaware, I got GSM connection on his Arc with my Sim card.. (Nothing wrong with my sim?)
Then i used his sim card (it was from another operator) in my flashed Arc (on .368) & didn't get any problem, got GSM connection :-/ Now i am confused. My sim card & my phone don't like each other or what?

Mano1982 said:
Now i am confused. My sim card & my phone don't like each other or what?
Click to expand...
Click to collapse
Well, now I am puzzled too.
Try cleaning contacts in phone and suface of sim (no liquid). Try pressing sim card firmly when booting phone.

The solution for me was to change the SIM

@Harfot: Thanks, I'll try again tonight & will follow your suggestion
@neoduende: Thanks, I have actually ordered my service provider to send a new sim card

[Q] Xperia Arc Wont read SIM Cards

Hi there, So the other day I deiced that I was going to unroot my Xperia Arc for some reason. I didn't get a backup of my phone( Which is stupid I know). After I did the unroot my Xperia was a little messed up. It was not reading Sim cards and at one point in time go stuck in flash mode. It now has been Flashed with LT15a_2.3.3, 3.0.1.A.0.145_Rogers.ftf. Then it was updated. and Rooted. It still will not recognize any SIM card. If anyone Can help
Model Number : LT15a
Android Version : 4.0.4
Kernel Version: 2.6.32.9-perf
Build Number: 4.1.B.O.587
If you need anymore info let me know
Thanks

nelsion said:
Hi there, So the other day I deiced that I was going to unroot my Xperia Arc for some reason. I didn't get a backup of my phone( Which is stupid I know). After I did the unroot my Xperia was a little messed up. It was not reading Sim cards and at one point in time go stuck in flash mode. It now has been Flashed with LT15a_2.3.3, 3.0.1.A.0.145_Rogers.ftf. Then it was updated. and Rooted. It still will not recognize any SIM card. If anyone Can help
Model Number : LT15a
Android Version : 4.0.4
Kernel Version: 2.6.32.9-perf
Build Number: 4.1.B.O.587
If you need anymore info let me know
Thanks
Click to expand...
Click to collapse
Find a stock 587 ROM and flash that, how you've flashed a 2.3.3 and ended up with 4.0.4 is a little baffling.

Where to find
Hey man sorry i was wondering if you would know where to get it
thanks

you can find stock .587 here:
http://forum.xda-developers.com/showthread.php?t=1836071
press thanks if it helps

page
hey when i go to that page the 3 links dont work

here:
http://forum.xda-developers.com/showthread.php?t=1836071&page=25
post #244
sorry but I cant paste the mediafire link.. xda dont allow posting of outside links for users with less than 10 posts.
dont forget to hit thanks

Still not reading the SIM
So I flashed the stock rom and still have no signal. Also i was able to test my battery today with another Xperia Arc. Its reads full on the phone that has had nothing done to it but on mine it read at 0% and will not go up

nelsion said:
So I flashed the stock rom and still have no signal. Also i was able to test my battery today with another Xperia Arc. Its reads full on the phone that has had nothing done to it but on mine it read at 0% and will not go up
Click to expand...
Click to collapse
Looks like you've flashed too far back - http://forum.xda-developers.com/showthread.php?t=1312398

Still Not Reading SIM or anyother SIM
Hey so got the Battery working....and the phone is now rooted. The thing is still i am unable to connect to my provider which is Rogers.
thanks

nelsion said:
Hey so got the Battery working....and the phone is now rooted. The thing is still i am unable to connect to my provider which is Rogers.
Click to expand...
Click to collapse
Try downloading the APN Settings. What Baseband are you using?

APN
APN settings are correct. the Baseband 8x55a-AAABQOAZM-203028G-70
thanks man

Baseband
I was wondering what is the proper baseband i should be on.

Still Not Reading SIM or anyother SIM
Hey So no matter what Stock ROM I flash to this phone it will not read any SIM cards. I have contacted cellunlock.net and they were unable to unlock this phone. Can anyone help... this phone is useless with out being able to connect to a Mobile Carrier Network
thanks

nelsion said:
Hey So no matter what Stock ROM I flash to this phone it will not read any SIM cards. I have contacted cellunlock.net and they were unable to unlock this phone. Can anyone help... this phone is useless with out being able to connect to a Mobile Carrier Network
thanks
Click to expand...
Click to collapse
Try to take the sim card out of the arc and then in maybe it works!

thanks
G-martar said:
Try to take the sim card out of the arc and then in maybe it works!
Click to expand...
Click to collapse
Tried that a few times and nothing,

[Q] Xperia Play R800i No Service

Hello, i have an xperia play which is R800i, it's bootloader unlocked, and should be network unlocked, if i go in that option with brackets like [] Network etc they are all with empty brackets and 0, according to some pages its fully unlocked, but still, i cannot get it to work, i've made several baseband changes, roms, etc,
what could be the problem of the phone? i bought it from someone that i usually buy stuff off, so i "shuld" be sure its not imei locked, but then, even if it was imei locked, would i be able to set a PINfor the SIM card? is there a way to check if there's a SIM card inserted in the phone from android? because i feel like it doesn't read my sim at all.
Please suggestions are welcome i tried everything, thank you

i can pay for a solution if its 100% working

hi
KActat1992 said:
Hello, i have an xperia play which is R800i, it's bootloader unlocked, and should be network unlocked, if i go in that option with brackets like [] Network etc they are all with empty brackets and 0, according to some pages its fully unlocked, but still, i cannot get it to work, i've made several baseband changes, roms, etc,
what could be the problem of the phone? i bought it from someone that i usually buy stuff off, so i "shuld" be sure its not imei locked, but then, even if it was imei locked, would i be able to set a PINfor the SIM card? is there a way to check if there's a SIM card inserted in the phone from android? because i feel like it doesn't read my sim at all.
Please suggestions are welcome i tried everything, thank you
Click to expand...
Click to collapse
i can try to fix it ..... contact me on gtalk [email protected]

kks111 said:
i can try to fix it ..... contact me on gtalk [email protected]
Click to expand...
Click to collapse
He couldn't fix it because he said its after some week date etc, but really is there nothing to try?
Also what may be the reason after i flash a kernel it stays black screen? could kernel help resolve sim issues?

hi,replying cause i have same problem..i unlocked the bootloader with sony offcial method the second i had it in my hands and flashed a custom rom(everything working fine before the flashing..)..oddly i could use data(browser youtube facebook ecc working) but no calls or text..so i relocked bootloader and flashed with seus but nothing to do,same problem data working but no calls or text..then i unlocked again tried some roms,then decided to relock and give a try again with seus..now it won't recognise the sim at all,and NO FASTBOOT,it was working fine before the 2nd flash with seus,and i know for sure it's not an hardware issue...flashed many simlock.ta(changing the name to preset.ta) with flashtools..bot nothing.now i can only flash stock tft,since fastboot is no longer working(so i can't unlock the bootloader for the 3rd time), everytime after first boot it ask to insert sim and reboot, even if it ask for pin if i set it..so it IS reading the sim...the radio is bricked,been searching for 2 weeks now, and no solution found. i contacted alejandrissimo, he said he coul fix broken trim area for 20$, but it isn't answering to my messages anymore..sorry bro it looks like our play it's gone forever as a phone, so far..

plese help.....
my xplay not working edge network but 3g working good....
many much frmwre i try...but not sucses....
im using xperia play r800i gb 2.3.4

I have the same issue in xperia play R800i too, network 2g not working anymore I tried several sim cards, not worked , my bootloader unlocked as my battery is drain in 5 hours too even I tried everything rooms kernels basebands , apps closing google play service all solutions in the net,with no hope :s , hardware problem ? it' snot because i heard someone found some new formation that it's an problem in baseband and it's happened to his Sk18i and Sony fixed it by ICS update , it's has the same problem no 2g and battery drain in 12 hours and after he updated the battery fixed it's goes for 48 ours with normal use and the 2g worked , and the problem is there is no official Ics update in our device
any one can help ?? or find solution ,, I'm sure that there are many many people who are suffering with this horrible problem

xkiasfansuryx said:
plese help.....
my xplay not working edge network but 3g working good....
many much frmwre i try...but not sucses....
im using xperia play r800i gb 2.3.4
Click to expand...
Click to collapse
Check your APNs, from my experience they get reset if you flash a generic FTF
---------- Post added at 10:09 AM ---------- Previous post was at 10:07 AM ----------
inaroom said:
hi,replying cause i have same problem..i unlocked the bootloader with sony offcial method the second i had it in my hands and flashed a custom rom(everything working fine before the flashing..)..oddly i could use data(browser youtube facebook ecc working) but no calls or text..so i relocked bootloader and flashed with seus but nothing to do,same problem data working but no calls or text..then i unlocked again tried some roms,then decided to relock and give a try again with seus..now it won't recognise the sim at all,and NO FASTBOOT,it was working fine before the 2nd flash with seus,and i know for sure it's not an hardware issue...flashed many simlock.ta(changing the name to preset.ta) with flashtools..bot nothing.now i can only flash stock tft,since fastboot is no longer working(so i can't unlock the bootloader for the 3rd time), everytime after first boot it ask to insert sim and reboot, even if it ask for pin if i set it..so it IS reading the sim...the radio is bricked,been searching for 2 weeks now, and no solution found. i contacted alejandrissimo, he said he coul fix broken trim area for 20$, but it isn't answering to my messages anymore..sorry bro it looks like our play it's gone forever as a phone, so far..
Click to expand...
Click to collapse
I'm 100% sure having a locked boot loader makes accessing fast boot impossible? If you can still flash FTF find one for an ICS Rom and see if that fixes it

SubjectSigma said:
Check your APNs, from my experience they get reset if you flash a generic FTF
---------- Post added at 10:09 AM ---------- Previous post was at 10:07 AM ----------
I'm 100% sure having a locked boot loader makes accessing fast boot impossible? If you can still flash FTF find one for an ICS Rom and see if that fixes it
Click to expand...
Click to collapse
thanks for replying, i reflashed with wotan and now i have unlocked bootloader, and can flash but the problem on 3g stiil exist. i'm on superjellybean8, and sometimes it will lose the signal on 3g(but data fully working) i get emergency call only,i can browse and other data task like facebook etc, but no call or text, so i turn airplane mode on off until it gets the signal(wich sometimes is very very painful and slow..). i usually get no problem on 2g..so may i start thinking it could be hardware problem on the 3g antenna or something? i've been using it for a couple month now,if i could get rid of the 3g problem it would be great..it makes me miss some important calls you know..

inaroom said:
thanks for replying, i reflashed with wotan and now i have unlocked bootloader, and can flash but the problem on 3g stiil exist. i'm on superjellybean8, and sometimes it will lose the signal on 3g(but data fully working) i get emergency call only,i can browse and other data task like facebook etc, but no call or text, so i turn airplane mode on off until it gets the signal(wich sometimes is very very painful and slow..). i usually get no problem on 2g..so may i start thinking it could be hardware problem on the 3g antenna or something? i've been using it for a couple month now,if i could get rid of the 3g problem it would be great..it makes me miss some important calls you know..
Click to expand...
Click to collapse
I'm pretty sure the GSM attenna is on the top left on the opposite of side of the power button, have you dropped it recently?
Just occurred to me now, call your service provider and see if the 3G tower in your area is undergoing maintenance

SubjectSigma said:
I'm pretty sure the GSM attenna is on the top left on the opposite of side of the power button, have you dropped it recently?
Just occurred to me now, call your service provider and see if the 3G tower in your area is undergoing maintenance
Click to expand...
Click to collapse
that's what happens.. it get the net but then give the emergency calls only message..

inaroom said:
that's what happens.. it get the net but then give the emergency calls only message..
Click to expand...
Click to collapse
I wouldn't post your IMEI on the internet

SubjectSigma said:
I wouldn't post your IMEI on the internet
Click to expand...
Click to collapse
thanks for the advice didn't think about it..

inaroom said:
that's what happens.. it get the net but then give the emergency calls only message..
Click to expand...
Click to collapse
no one knows?

Won't you mind if I join this thread?
I've got r800i unlocked from aliexpress which was working fine but had non-working touch-sticks.
So I tried to flash newer firmware (.79) and end up with 'no service' problem.
Like OP I have "[] Network 0" so it's definitley not become locked but it doesn't see my provider.
The funny thing is that it does see one of the local providers but only one of three.
Tried different ftf's, currently on R800i_4.0.2.A.0.84_Vodafone DE_(1247-8566).
The only thing I know from the original firmware (from flashtool) is:
Current device : R800i - CB5A1D6HYX - 1247-6268_R8D - 1245-8821_4.0.2.A.0.42 - WORLD-1-8_4.0.2.A.0.42
As I understand this one had Meteor IE baseband.
Is this problem has something with firmware or could it be antenna/hardware problem?

gvma said:
Won't you mind if I join this thread?
I've got r800i unlocked from aliexpress which was working fine but had non-working touch-sticks.
So I tried to flash newer firmware (.79) and end up with 'no service' problem.
Like OP I have "[] Network 0" so it's definitley not become locked but it doesn't see my provider.
The funny thing is that it does see one of the local providers but only one of three.
Tried different ftf's, currently on R800i_4.0.2.A.0.84_Vodafone DE_(1247-8566).
The only thing I know from the original firmware (from flashtool) is:
Current device : R800i - CB5A1D6HYX - 1247-6268_R8D - 1245-8821_4.0.2.A.0.42 - WORLD-1-8_4.0.2.A.0.42
As I understand this one had Meteor IE baseband.
Is this problem has something with firmware or could it be antenna/hardware problem?
Click to expand...
Click to collapse
I had problem with "no service" after flash FTF, so the idea its baseband related, I try flash another one, and with R800i_-80_Baseband_GSM.ftf I have success, i have carrier again. maybe help someone

mikrom.cz said:
I had problem with "no service" after flash FTF, so the idea its baseband related, I try flash another one, and with R800i_-80_Baseband_GSM.ftf I have success, i have carrier again. maybe help someone
Click to expand...
Click to collapse
Thanks bro, but I sent the faulty device back to China. That's was the first idea - to change basebands, but that didn't help either in my case.

[Q] No Network

Hi everyone. My friend and I tried to flash a custom rom to his Xperia S. so before that we have to root, install recovery and etc.
we succeed on flash everything but that's what we thought. We noticed that the phone doesn't have any network, tried different sim and both from different networks are useless. So we Read and we still can't find any solution.
the phone IMEI is intact
the phone is sim unlocked
the baseband is 8660-AAAABQOLYM-313065-39
the phone is on .96 FTF
we already tried to revert back to .96 FTFs I think the baseband is not compatible with our country Philippines.
we already tried downloading the .96 customized PH FTF from Xperiafirm but still there's no luck.
we already tried repairing through PC companion
we already tried flashing FTFs .200 .211 and.96
Can you help us?

zenesis said:
Hi everyone. My friend and I tried to flash a custom rom to his Xperia S. so before that we have to root, install recovery and etc.
we succeed on flash everything but that's what we thought. We noticed that the phone doesn't have any network, tried different sim and both from different networks are useless. So we Read and we still can't find any solution.
the phone IMEI is intact
the phone is sim unlocked
the baseband is 8660-AAAABQOLYM-313065-39
the phone is on .96 FTF
we already tried to revert back to .96 FTFs I think the baseband is not compatible with our country Philippines.
we already tried downloading the .96 customized PH FTF from Xperiafirm but still there's no luck.
we already tried repairing through PC companion
we already tried flashing FTFs .200 .211 and.96
Can you help us?
Click to expand...
Click to collapse
Did You flash a stock firmware using flashtool version 0.9.19.1? It causes sim lock while flashing. It was brought to attention when same problem was aced by other user. Quoting him below.
berda77 said:
Tried many stock FW and found the reason of the recent problem happened to many people all over the world. That's flashtool-0.9.19.1 which contained some script errors which lead to bootloader locking and loose of network connection
http://forum.xda-developers.com/showpost.php?p=62881806&postcount=2758
Click to expand...
Click to collapse

Mirhawk said:
Did You flash a stock firmware using flashtool version 0.9.19.1? It causes sim lock while flashing. It was brought to attention when same problem was aced by other user. Quoting him below.
Click to expand...
Click to collapse
thanks for the immediate reply. What should we do then? just flash a stock FTF using flashtool with different version from the ones you stated? or we can still use the 0.9.19.1 but we have to exclude the simlock?

No network
zenesis said:
thanks for the immediate reply. What should we do then? just flash a stock FTF using flashtool with different version from the ones you stated? or we can still use the 0.9.19.1 but we have to exclude the simlock?
Click to expand...
Click to collapse
That's no use bro. I've tried many Stock FW as well as many versions of Flashtool after getting same problem with my phone. As Flashtool creator wrote "The only way to recover from locked phones is to reactivate them in a service center or to restore the 07DA unit". So, if you don't have TA partition backup made prior bootloader unlocking then you've got an alarm with camera & mp3 player made by Sony. The ASC propose to replace the whole motherboard.

[GUIDE] Flashing XQ-AT51 Firmware on XQ-AT52 Device

Disclaimer: I am not responsible for any bricks/ issues you may encounter following this guide. Although, I will do my best to try to help you if something were to go wrong.
MAKE SURE OEM UNLOCK IS ENABLED UNDER DEV SETTINGS BEFORE YOU DO ANYTHING BELOW
Update 2: 3/11/2021 : I see maybe deleting the .ta files may help avoid soft bricking, feel free to try it I have not personally tested yet to see if it works.
Update#3 3/13/2021 : If you are following this guide recently make sure you update to Android 11 first! Do not do any updates after the first one to Android 11! Then the flashing should work just fine. Tested and verified this on Taiwan XQ-AT52 to 51 firmware
Hello, I've managed to successfully flash AT51 firmware on my AT52 without issue using Newflasher.
Step 1 download = the US firmware/ whatever region is needed for you and new flasher/ the sony xperia drivers needed to flash the firmware to your device. Extract it to your desktop. Install the Xperia driver from newflasher if you need to/ haven't yet. Newflasher needs to be extracted into the same folder where the firmware files are that you downloaded from Xperifirm. This step is crucial!
Step 2 : Power off your Xperia and put it in flash mode by pressing down on the volume and connecting it to your PC via usb. (Do not use the USB C cable that came with the phone use a different one if you have one) You'll know it is in flashmode if the notification LED turned green and the screen remains off.
Step 3 : Open newflasher.exe
Step 4: type n then press enter
Step 5: type n again and press enter
Step 6 : This is when you should get to the flashing stage. Press Y and enter to everything you are prompted to. type y for yes to. This for me resulted in a successful conversion over to AT51.
Step 7: Once everything is done and it says you are safe to disconnect your phone please do so and then press and hold your power button until the phone boots up.
At this point you should have a fully working AT51 firmware!
Bare with me as I"m working on getting developer access for androidfilehost and will upload the files asap. In the meantime you can download newflasher and the firmware files yourself using Xperifirm if you don't wanna wait for me to upload.
Xperifirm: https://forum.xda-developers.com/cr...xperifirm-xperia-firmware-downloader-t2834142
Newflasher: https://forum.xda-developers.com/cr...gress-newflasher-xperia-command-line-t3619426

Can you please help? I followed and i got a corrupted message and power off in 5 second.
I tried xperia companion, failed.
I tried to reflash newflasher with original firmware again, failed.
Please help.

tiunilohmu said:
Can you please help? I followed and i got a corrupted message and power off in 5 second.
I tried xperia companion, failed.
I tried to reflash newflasher with original firmware again, failed.
Please help.
Click to expand...
Click to collapse
Can you tell me the model of your xperia phone? If you can still get it into flash mode when the notification LED turns green you may still be able to recover it.

Hi, I finally managed to restore it. I have to remove all the ta files to flash it, then it booted up.
Thanks for your respond.

my device is corrupted please help

blegs said:
my device is corrupted please help
Click to expand...
Click to collapse
what did you do to corrupt it?

Lennyuk said:
what did you do to corrupt it?
Click to expand...
Click to collapse
I have using newflasher
After using 3 time xperia companion it work normal again

Hi, I didn't find this thread until after I made an attempt at flashing the device. I followed the instructions from the link below and ended up with the device saying it's corrupted.
https://www.xperiablog.net/2018/01/...-firmware-for-xperia-xz-premium-xz1-and-more/
I tried redownloading newflasher as well as redownloading the firmware I wanted as well as a new cable and that did not help. I reflashed it with this procedure listed above and it did not help.
Xperia companion won't let me do anything because it says the device is locked even though the device was not locked and there doesn't appear to be a way to unlock it. edited to add that I did get xperia companion to repair it successfully
edit again to advise I succeeded only after doing n and enter a third time then hitting y and enter for the final flashing step and that was successful in getting it updated correctly

Would it work to unlock my phone
Thanks for the guide!
Can I ask few questions please?
First is do I need to have my bootloader unlocked? I enabled OEM unlock setting in developer settings but that is only one thing I did.
And the second one is could this flash unlock my phone?
I am in this situation where my AT51 won't work with other sims except for Vodafone. UK.
I stayed with them for 30 days, (required time frame to get your phone unlocked) requested unlock code and it has been more than 10 working days but still have not received the code.
So today I did some searching online and found the service code to check if my phone is locked to a network and to my surprise it says it's not. So I am guessing that they have limited my phone to using only their sim through some other means andnot buy locking my modem. But this is ofc just a guess.
I kept chatting with the customer support and he keeps saying wait for the code which I do not believe is going to come, they have to unlock it on their end. But I am not sure about that. I don't think they are sure either..
Basically I'll wait fem more days maybe they will unlock it but if they won't when I am thinking maybe my modem is not locked and I could unlock it by flashing different ROM?
Or do you think this won't work?
Sorry for a rambling post. Looking forward to your reply. Thanks!

Mazvydelis said:
Thanks for the guide!
Can I ask few questions please?
First is do I need to have my bootloader unlocked? I enabled OEM unlock setting in developer settings but that is only one thing I did.
And the second one is could this flash unlock my phone?
I am in this situation where my AT51 won't work with other sims except for Vodafone. UK.
I stayed with them for 30 days, (required time frame to get your phone unlocked) requested unlock code and it has been more than 10 working days but still have not received the code.
So today I did some searching online and found the service code to check if my phone is locked to a network and to my surprise it says it's not. So I am guessing that they have limited my phone to using only their sim through some other means andnot buy locking my modem. But this is ofc just a guess.
I kept chatting with the customer support and he keeps saying wait for the code which I do not believe is going to come, they have to unlock it on their end. But I am not sure about that. I don't think they are sure either..
Basically I'll wait fem more days maybe they will unlock it but if they won't when I am thinking maybe my modem is not locked and I could unlock it by flashing different ROM?
Or do you think this won't work?
Sorry for a rambling post. Looking forward to your reply. Thanks!
Click to expand...
Click to collapse
You do not need the bootloader unlocked as you are flashing official firmware.

Anyone know if you can flash a XQ-AT52 to a XQ-AT51 and then back to the XQ-AT52 firmware?
Sent from my XQ-AT52 using Tapatalk

I know this thread is a few months old at this point but I'm really struggling to flash to XQ-AT51. I've successfully flashed from XQ-AT52 Hong Kong (my original firmware) to the Taiwan version which is slightly better because of the messaging compatibility but I really want to get the US version. I have tried at least 20 times over the course of a full day and I have not been able to flash the US firmware without getting an error saying "Your device is corrupt It can't be trusted and will not boot" every time. I have repaired it back to the Hong Kong firmware (back when that was the one I had) and to the Taiwan version once I had that installed. But I have never gotten the US firmware to take without the "Device is corrupt" error.
My phone is the Sony xperia 1 mark 2 running the then default XQ-AT52 Hong Kong, and now running the default XQ-AT52 Taiwan. I've been trying to flash to XQ-AT51 US. I've been using newflasher v39 and the US firmware downloaded for xperifirm v 5.5.0.

So I was able to flash from the hong kong version to the Taiwan version and back with no issues at all. But I'm still unable to flash to the US version without the "Your device is corrupt It can't be trusted and will not boot" error that seems to happen every single time I try to install the US firmware.

Can someone make me a favor and can upload the latest ftf of Android 10 for the Xperia 1ii Single SIM?

ProjectBlitz said:
So I was able to flash from the hong kong version to the Taiwan version and back with no issues at all. But I'm still unable to flash to the US version without the "Your device is corrupt It can't be trusted and will not boot" error that seems to happen every single time I try to install the US firmware.
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The 1 II has downgrade protection, so as long as the firmware version of the US version isn't the same or newer than the highest version you've ever used you're gonna get the corruption error.
What you could try is flashing the newer EU version and then flashing only the older US customisation image. That's what I did for a while since US firmware was older than EU firmware, and it worked. Not sure if it'll work with Android 11.

ProjectBlitz said:
I know this thread is a few months old at this point but I'm really struggling to flash to XQ-AT51. I've successfully flashed from XQ-AT52 Hong Kong (my original firmware) to the Taiwan version which is slightly better because of the messaging compatibility but I really want to get the US version. I have tried at least 20 times over the course of a full day and I have not been able to flash the US firmware without getting an error saying "Your device is corrupt It can't be trusted and will not boot" every time. I have repaired it back to the Hong Kong firmware (back when that was the one I had) and to the Taiwan version once I had that installed. But I have never gotten the US firmware to take without the "Device is corrupt" error.
My phone is the Sony xperia 1 mark 2 running the then default XQ-AT52 Hong Kong, and now running the default XQ-AT52 Taiwan. I've been trying to flash to XQ-AT51 US. I've been using newflasher v39 and the US firmware downloaded for xperifirm v 5.5.0.
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im in the us and was looking to the 256gb version (i think its taiwan). is the hong kong or taiwan version missing anything? or is the only reason to flash to US to get better coverage with us carriers?

GreeleyXda said:
im in the us and was looking to the 256gb version (i think its taiwan). is the hong kong or taiwan version missing anything? or is the only reason to flash to US to get better coverage with us carriers?
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It's for better coverage and for VoLTE and Wi-Fi calling support. Also if you get a HK one with Android 11 you will be unable to flash the US firmware, because it is still on Android 10; and the phone has anti-rollback protection.

it arrived on 10 still, but its bugging me to update.

THISISINSANE said:
It's for better coverage and for VoLTE and Wi-Fi calling support. Also if you get a HK one with Android 11 you will be unable to flash the US firmware, because it is still on Android 10; and the phone has anti-rollback protection.
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This isn't the case now since the US models have Android 11 too now

Can anyone confirm that this process has to be done using USB 2.x? I've read in a separate post that newflasher isn't compatible with USB 3.x, which is currently what all my computer use. Also, should I be using the newest version newflasher?
EDIT: Tried on USB 2.0 and it worked perfectly.