[Q] Baseband Unknown, Signal Problems - Sony Xperia T LT30p - Sony Xperia T, TL, TX, V

So I recently Rooted my LT30p and everything seemed fine until I tried to make a call today, no networking signal wherever I go and the baseband version just states - Unknown -
Any fixes out there?
I dont mind wiping my device and setting everything back to unrooted and so on.
This is my first time rooting a phone so I have generally no idea whats gone wrong :/
I used Towelroot to root my LT30p
If you need any other information, let me know please.
Thanks

Related

Mms/internet settings not downloading (solved)

Not working fails.from lt30a with Vodafone3.03 without baseband then upped to stock rooted deodexed jb.how can I get internet to work?
Sent from my LT30p using xda premium
to be more specific.. i started with stock xperia at&t lt30 4.0.4
then in order to flash this rom http://forum.xda-developers.com/showthread.php?t=2026918 i flashed (top selection) [STOCK FIRMWARE] Xperia T [LT30p] 7.0.A.1.303 [Vodafone UK] FTF by gregbradley as mentioned in order to use the deodexed 4.1 ,first i needed 303 firmware. so then i rooted, installed cwm, and flashed http://forum.xda-developers.com/showthread.php?t=2026918 after wiping data/factory reset. and then lastly the reboot cwm fix and rebooted,now i get no internet/playstore on phone unless on wifi, when it asks randomly if i wanted to download mms/internet setting,i say yes. it hangs and eventually says "could not be downloaded".
Am i the only one with this problem?
i reflashed stock at&t ics and all is well,so i tried a different .303 ftf , the generic one and still same issue once phone booted,it tries to download mms/internet settings and the progress bar never locks, just times out after a couple minutes and im stuck with no internet, mms works,phone calls work, just no internet,facebook apps,etc.
i flash these other 303 ftf's always checking "excluding baseband" ..
apns are blank, ive thought of using APN Backup&Restore but as most know it incompatible with ics. so not sure what i could do. tried entering them manually ,from what i found online for Xperia S with AT&T but they dont stick. not sure where to go from here. I am suprised no one has run into this issue. Maybe its here somewhere in the general forum but i dont see it.
any help would be greatly appreciated
rdavisct said:
Am i the only one with this problem?
i reflashed stock at&t ics and all is well,so i tried a different .303 ftf , the generic one and still same issue once phone booted,it tries to download mms/internet settings and the progress bar never locks, just times out after a couple minutes and im stuck with no internet, mms works,phone calls work, just no internet,facebook apps,etc.
i flash these other 303 ftf's always checking "excluding baseband" ..
apns are blank, ive thought of using APN Backup&Restore but as most know it incompatible with ics. so not sure what i could do. tried entering them manually ,from what i found online for Xperia S with AT&T but they dont stick. not sure where to go from here. I am suprised no one has run into this issue. Maybe its here somewhere in the general forum but i dont see it.
any help would be greatly appreciated
Click to expand...
Click to collapse
Are you able to locate the apn on line. If yes, enter it and save it and you should be good to go. I have an AT&T Lt30at running UK generic JB and it would not download internet setting either. Loaded AT&T apn from Ion wiki posted by Spectre51 and its working fine.
Re: Mms/internet settings not downloading
augie7107 said:
Are you able to locate the apn on line. If yes, enter it and save it and you should be good to go. I have an AT&T Lt30at running UK generic JB and it would not download internet setting either. Loaded AT&T apn from Ion wiki posted by Spectre51 and its working fine.
Click to expand...
Click to collapse
Thanks.can you link me to it? I couldn't find the correct apn settings online.
Sent from my LT30at using xda premium
im on rogers and even after entering the lte apns data still wont work for me and woudlnt when i flashed back to rogers ics its really werid :/
rdavisct said:
Thanks.can you link me to it? I couldn't find the correct apn settings online.
Sent from my LT30at using xda premium
Click to expand...
Click to collapse
Here it is:
http://forum.xda-developers.com/showpost.php?p=27979729&postcount=4
Thanks for the APN's, i am saving them. ive been looking on the market (google play) and i found an app called "APN Utility". it seems to have saved the current APN's from stock so i am going to try to restore them once i flash 303 ftf. My first attempt was with "APN Backup&Restore" the app ive been using for years to fix this issue on other phones, but for some reason its incompatible with ICS & JB. but APN Utility went through,i will report back and let you guys know if it works. if not ill try manually.
Re: Mms/internet settings not downloading
problem fixed,thanks augie7107!!
for anyone with the same issue , just enter this one..
http://forum.xda-developers.com/showpost.php?p=27979729&postcount=4 at top of page

[Q] Help with rooting problem

hey guys i have the Xperia Z 4G from Telstra
Bootloader unlock allowed - Yes
Android: 4.1.2
Build: 10.1.A.1.350
Model: c6603
I have been trying to root the device without unlocking the BL how ever it is not working i have been following the two similar guides on here like this one
http://forum.xda-developers.com/showthread.php?t=1886460&highlight=restore+ended&page=241
All drivers are installed the script detects my phone perfectly once in the script i choose option "3" then it tells me to follow on screen promts to restore, i do this as instructed i press restore and then it says Restore started, then like a second later i get "Restore ended" and the script can not continue.
Any suggestions would be much appreciated i only want it rooted so i can apply the wifi dropout fix.
Do you have pc companion opened?
In security settings activate unknown source.
Or factory reset and try again.
Sent from my C6602 using xda premium

[Q] xperia zr baseband unknown no wifi and cellular service

everything was working fine on my xperia zr(c5502) until one day when for the first time the phone had its battery completely exhausted somehow the cellular service was lost and the phone got locked by mcafee internet security and was always asking for the pin at the start.even after entering the correct password it would just get stuck at this part and would never unlock.so i flashed the stock firmware 4.2.2.it was so unstable and was rebooting continously so i flashed the its first stock firmware 4.1.2 which removed the lock and reboot problems but the baseband is now unknown and no imei too and so no cell service and wifi isnt working.i am currently trying to flash the different firmware files and the baseband files of c5502 and c5503 to see if the baseband gets updated.before this problem started,i had never rooted the phone nor unlocked the bootloader or do anything of this sort.somebody please tell me what to do .has anyone xperienced this same error or baseband unknown error for zr???? :crying:
ajgo333 said:
everything was working fine on my xperia zr(c5502) until one day when for the first time the phone had its battery completely exhausted somehow the cellular service was lost and the phone got locked by mcafee internet security and was always asking for the pin at the start.even after entering the correct password it would just get stuck at this part and would never unlock.so i flashed the stock firmware 4.2.2.it was so unstable and was rebooting continously so i flashed the its first stock firmware 4.1.2 which removed the lock and reboot problems but the baseband is now unknown and no imei too and so no cell service and wifi isnt working.i am currently trying to flash the different firmware files and the baseband files of c5502 and c5503 to see if the baseband gets updated.before this problem started,i had never rooted the phone nor unlocked the bootloader or do anything of this sort.somebody please tell me what to do .has anyone xperienced this same error or baseband unknown error for zr???? :crying:
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2560677
Lasantha said:
http://forum.xda-developers.com/showthread.php?t=2560677
Click to expand...
Click to collapse
he has not got a working solution for this..what am i supposed to do.please help????
ajgo333 said:
he has not got a working solution for this..what am i supposed to do.please help????
Click to expand...
Click to collapse
just reflash fw bro everything will fixed.
stupid me... caught this...
how i resolved it... (im using cm/fxp btw)
- make nandroid backup
- wipe
- reboot
- baseband comes back
- reboot into recovery
- advanced recovery with "data" only
- reboot
- done.
i have this problem too.
i'm on stock 4.1.2 with no baseband,imei and signal.
bootloader is locked.
i test many stock and custom roms. but not solved.
any way to repair it?
l0000l said:
i have this problem too.
i'm on stock 4.1.2 with no baseband,imei and signal.
bootloader is locked.
i test many stock and custom roms. but not solved.
any way to repair it?
Click to expand...
Click to collapse
repair centre?
nostupidthing said:
repair centre?
Click to expand...
Click to collapse
no professional repair center near me to repair it.

Xperia Firmware update problems c6606

Hi, Guys. I recently flashed a new Rom on my T-mobile Xperia Z. However whenever I update to 5.0.2 Lillopop I cannot get cell reception. I live in Guyana so I bought the phone online and had it shipped and unlocked. I have tried both the c66103 and the c6616 however in both , as soon as I update to Lollipop I lose cell reception. All other updates up to Kit Kat 4.4.4 work perfectly. Any advice? I figure it must be something like a baseband problem. I have already tried flashing that however the baseband # does not change. Any advice would be helpful.
Best Regards
sony rom is bugged with callings they said they repair it .
I recently even tried the 5.1.1 update but I still suffer the same problem. I get absolutely no cell reception. It's like the sim is not even being recognized by the phone. I am wondering about trying to build an ftf file however I am not sure if you can edit the baseband in that venture. I believe that it may be the baseband that is presenting the problem, however I am kind of a noob so I need to be sure before I try anything.

Xperia ZR periodically losing network connection, baseband and IMEI.

Hi all. I bought used Experia ZR. And it have problems with baseband, EMEI and WiFi. I know that losing this information on ZR is very bad, and this problem have no solution. But I have TA backup, and in my case somtimes all working good and I see EMEI and other important parametrs. So I think that my situation may be not so critical as TA fatall damage.
I have no many expirience in mobile repairing, so i hope to take some advices here. The first question is - "Would should be my first step?"
Now i have Android 4.1.2, opened bootloader, root permissions and custom recovery. I tried many firmwares, but most of them doesn't loading when EMEI lost. I also trying flash image thru PC Companion, but it doesn't take any differenсes from Flashtool.
I think that it can be problems with flash memory or hardware problems with network module, but i don't know how to check it.
What can I try in this situation?
P.S.: Sorry for my english.
P.P.S.: I accidentally mixed up forum section. I hope moderator can fix it.

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