Database Develop

[SOLVED] IMEI missing, Baseband unkown, Wifi doesn't turn on

THANKS GOD. FINALLY REPAIRED!!!
@DevShaft Check the attachments bro
I just would like to thanks so much Sony Repair Center in Laredo TX US for repairing my phone in just 4 days.
Usually It takes 14 business days, and for non-US takes more. ( mine is non-US version)
My phone is covered with warranty thou. Now, the phone looks like a brand new unit, and I'm so happy and satisfied with the service they provided.
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The issues was:
-Unknown baseband, no IMEI, wifi doesn't turn on (radio functions wasn't working)
-The phone freezes and reboot Itself when updated to 4.2.2 or 4.3. so It was stuck on 4.1.2
In the attachments below:
-STATEMENT OF WORK
-My Xperia Z after the repair
NB:
The old mainboard was manufactured on 13W17. The new mainboard is manufactured on 13W47
of course the new mainboard's IMEI# matches the printed one on the bottom because they changed It too.
***I hope whoever have the same issues case that I had gets their device repaired***
Good luck guys, and thanks for all the suggestions and help!
Phone repair process summery:
March 13
Repair results thru live chat
March 09
Repair status check thru live chat:
-The attached thumbnails below are for my phone status before I send in for repair.

Open a case with eBay and get a refund.
If the problems were not mentioned in the description, eBay will side with you and make the seller refund.
Sent from my C6603 using Tapatalk

I have the same issue, I fix it with reflashing the rom, but everything start from the beginning.

lepi said:
I have the same issue, I fix it with reflashing the rom, but everything start from the beginning.
Click to expand...
Click to collapse
thx for the reply , but what do u mean everything start from the beginning?
can you please tell me with details, what did u do exactly ? and which firmware build did u flash in ur Z?
what's ur Z model? c6602 or c6603?
if possible provide me with screenshots
thx

kingvortex said:
Open a case with eBay and get a refund.
If the problems were not mentioned in the description, eBay will side with you and make the seller refund.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
thx for the advice... this doesn't work my friend!

@DevShaft please read my thread and give me your help!
i was in your thread about TA partition and I read so many interesting information!
if you have any idea how i can bring back IMEI, baseband, please let me know!
anything that would help me!
thanks alot

Return it. I don't understand why you're messing with it when you're entitled to a full refund.
You have already tried everything that might have fixed it.
As for the TA, editing it (or doing anything except backing up/restoring your own TA image) will result in a hard brick, so that is a dead end.
Sent from my C6603 using Tapatalk

Nidhal AKA the king said:
hello everyone,
I recently bought an Xperia Z C6602 variant (used condition) from ebay, but i didn't know that it has some problems as the onwer didn't mention that...
when i first time inserted my SIM card, it wasn't readable... i went to Settings, About, and i found that baseband is: unkown... also, *#06# shows Blank IMEI... i attached some screenshots below for the phone current state!
in all 4.1.2 builds C6602&C6603, the phone doesn't reboot or freeze.
I'm so familiar in flashing, using flashtool... so as i read in this forum that flashing and/or downgrading with a stock ROMS would fix this problem.. i have done this with many builds on 4.1.2 for C6602&C6603, in first boot i get this screen showing POWER OFF or Use phone, with a message pops up 3 time saying: FACTORY START UP SERVICE - Please wait for POWER OFF button
For versions 4.2.2 & 4.3 phone freeze & restarting itself
i tried to update using PC Companion, SUS, and even Flashtool, after first boot i got that same screen with same 3 repeated messages.. BUT, when welcome screen appears.. the phone dim, and when i click on power it's not turning on, so i restart and try to unlock lockscreen, then, phone freeze and keeps restarting....
N.B: I have never Unlocked Bootloader as you can see it's stats in the screenshots... I have never installed a Custom Rom such as CM..etc. the only thing I did is rooted the phone on a stock ROM and installed CMW.. all was done in Locked bootloader stats!
I've seen many Z users encountered the same issue, but for my case I don't know why and/or how this happened because It's a second hand bought! and the old owner did not mention anything about errors, or issues.
As you read about the phone condition, so you now know everything I went thru ever since i bought!
So, please anyone can provide me with more helpful information, links, repair tool, software...etc that would bring back the IMEI and so Baseband... would be so much appreciated
Please check the screenshots below!
Thanks to anyone in participation to help.
@pbmcmlxxi @Milad.Alef @shekharsuman @Hubriss @yahyaalbadry @mhbmutu
I took the phone to a smartphone repairshop today, when i showed him blank IMEI and unknown baseband he knew the cause of that problem!
The problem is that the original phone's baseband was lost during a sim unlock process, and a wrong baseband were installed instead. the initial (original) baseband MUST BE restored in order to have IMEI, Wifi, and the other radio frequencies back to life.. PROGRESS will take more or less two days! NOT a guarantee to get a successful restore.
in some other cases which it isn't a sim unlock related, but it's still a common problem. when you install a Custom ROM and you don't know what you are messing with, this could damage your original Baseband...and the phone will get bricked!
also, other cases of that issue occurred during update!
so we got two cases in here:
Baseband restore successful = Everything will be back intact.
Baseband restore fail = The phone will remain unrepairable.
Read&Learn:
A baseband processor (also known as baseband radio processor, BP, or BBP) is a device (a chip or part of a chip) in a network interface that manages all the radio functions (all functions that require an antenna). This may not include Wi-Fi and/or Bluetooth. A baseband processor typically uses its own RAM and firmware.
Keep in mind guys, It's still so risky to do a flash customized ROM, and/or unlocking bootloader. so, be very acknowledged of what you're going to do. I believe that rooting on a locked bootloader is the best and safest way to get the best off of your phone as It'll never damage the DRM keys (Digital Rights Management) and TA Partition.
play with everything in your phone but never do with the marked in red files.
If you ran out of warranty, this is probably the best solution to get it fixed if all kind of flashing, updating, or downgrading to stock roms didn't work like in my case.
Please if you know anyone else who has same case like us, just tag him here or send him my link, at least they can make a try. it really worth it.
Thank you all for your participation.
Good luck for us.
Click to expand...
Click to collapse
Hi Nidhal..thanks for tagging me.
I read your post & you seem to suggest that there is way to bring back these "dead" phones back to life.Can you elaborate how you are going about restoring it.I think you & I have the same problems.
What did the tech guys suggest they are going to do with your phone?Do let me know about your progress.I want to give my phone one last shot & if it doesn't work this time, then I'm actually going to go out & bury it in the nearest field. :laugh:
All the best buddy!

Hubriss said:
Hi Nidhal..thanks for tagging me.
I read your post & you seem to suggest that there is way to bring back these "dead" phones back to life.Can you elaborate how you are going about restoring it.I think you & I have the same problems.
What did the tech guys suggest they are going to do with your phone?Do let me know about your progress.I want to give my phone one last shot & if it doesn't work this time, then I'm actually going to go out & bury it in the nearest field. :laugh:
All the best buddy!
Click to expand...
Click to collapse
u welcome @Hubriss, sorry for the late respond, and also sorry to inform u that the phone failed to get repaired!
the only way to get it repaired is at Sony repair center!
if u there is a Sony repair center near your place just send it to them, even if it's out of warranty.. they charge u for a repair fee , but it's still better than to leave the phone unrepairable!
good luck!

kingvortex said:
Return it. I don't understand why you're messing with it when you're entitled to a full refund.
You have already tried everything that might have fixed it.
As for the TA, editing it (or doing anything except backing up/restoring your own TA image) will result in a hard brick, so that is a dead end.
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
thanks for the advice!
will send to sony for a repair!

The cause of yours and many other users problem is that you or the previous owner flashed the wrong region baseband or RIL (radio interface layer) for your device. There are so many firmwares to download and flash, it is child's play for anyone who doesn't fully comprehend what he's doing to flash the wrong firmware and get in a lot of sh*t like this. Therefore it is crucial to always be sure you have the correct information and firmware (FTF) for your device as a backup (not to confuse with a recovery made backup that is!).
To solve this issue you need to get a hold on the correct and complete (which includes baseband!) firmware for your device, preferably the one it was running when first purchased, and flash it through Flashtool. That should solve the issue when done correctly
Yours is already at Sony Repair Center, so nothing you can do about it yourself at this point. I'm sure Sony will fix this easily. For your info, this problem you're having has nothing to do with TA.

DevShaft said:
The cause of yours and many other users problem is that you or the previous owner flashed the wrong region baseband or RIL (radio interface layer) for your device. There are so many firmwares to download and flash, it is child's play for anyone who doesn't fully comprehend what he's doing to flash the wrong firmware and get in a lot of sh*t like this. Therefore it is crucial to always be sure you have the correct information and firmware (FTF) for your device as a backup (not to confuse with a recovery made backup that is!).
@Hubriss
To solve this issue you need to get a hold on the correct and complete (which includes baseband!) firmware for your device, preferably the one it was running when first purchased, and flash it through Flashtool. That should solve the issue when done correctly
Yours is already at Sony Repair Center, so nothing you can try yourself anymore. I'm sure Sony will fix this easily.
Click to expand...
Click to collapse
thanks so much for the answer!
it's really helpful, I hope you've had answered It since long time before i send in for repair to sony. and your answer is really rich with information that i didn't get a chance to know despite the deep search i've done in the Google.
i hope for whom who ran out of warranty would try this out. at least i called Sony and they provided the country my phone was branded for!
this is so important to restore the original firmware and bring back baseband and so IMEI!
thanks again bro!

@DevShaft
So, Sony will easily fix my phone without replacing it with another one?
yeah, I thought this would damage the TA Partition or it's related to it! Thanks god it's not!

Nidhal AKA the king said:
@DevShaft
So, Sony will easily fix my phone without replacing it with another one?
yeah, I thought this would damage the TA Partition or it's related to it! Thanks god it's not!
Click to expand...
Click to collapse
I would say it is just a firmware flash for them, since they can retrieve all the info they need about your phone from the IMEI number which is located at the bottom side of the phone. Providing a refurbished one or repair the phone in question is a matter of costs analysis. So yeah, I think they will repair .

DevShaft said:
I would say it is just a firmware flash for them, since they can retrieve all the info they need about your phone from the IMEI number which is located at the bottom side of the phone. Providing a refurbished one or repair the phone in question is a matter of costs analysis. So yeah, I think they will repair .
Click to expand...
Click to collapse
well, for me i'd be happy and satisfied if they will repair the phone or either replace it with a fully working one without any issues!
thx again for the help bro :good:
i looked up the phone SI and after sony told me it's branded for Saudi Arabia, I found these SI numbers/versions below:
Saudi Arabia Generic SA 1270-8384 1270-6726 Saudi Arabia Generic SA 1270-8384 1270-6727 Saudi Arabia Generic SA 1270-8384 1270-6756 Saudi Arabia Generic SA 1270-8384 1270-6757 Saudi Arabia Generic SA 1270-8384 1273-7883 Saudi Arabia Generic SA 1270-8384 1273-7885
hopefully sony will finish the repair asap

Hmm. Now, this is very interesting information.
Every different region's FTF of a specific firmware version that I've flashed/seen all use the same baseband or I should say that the version number of the baseband is identical between regions.
Is this a case of Sony using identical version numbers on basebands that are actually different? If so, they are the only OEM that I've seen do that and it seems highly irresponsible of them or at least that it would cause issues for them internally when working with basebands.
If the above is not the case, could it be that the RIL is different in some way between regions? Someone needs to extract the RIL from different region's firmware and compare them to check that, as this is potentially vital information that should be appended to the thread when people upload FTFs.
If I have time to get to my PC later or at all this week, I'll extract some basebands and RIL from some different firmware versions I have saved and at least run a checksum on them. If I do, I'll post results here.
Sent from my C6603 using Tapatalk

@Nidhal AKA the king I stumbled on this thread more or less by accident after reading your post in the Backup TA thread.
I've got a Xperia T protoype here that is having exactly the same issues. All the screenshots you've posted could be from my phone (does the service menu crash when you try to open configuration?)
I actually only realized it was a prototype when I was about to type the IMEI in to the system of the local Sony contractor to send it in for repair.
"F...." was what I thought in that moment...no free repair for me
@kingvortex I was able to get it working with CM10, which is using the same baseband version as stock roms that don't work. Now that could fire your question about the differences in basebands using the same version numbers, at the same I have no idea what else could be wrong and whether this prototype is maybe even using different hardware components.
Also, flashing stock over CM and skipping the baseband did not help.
Link to my thread with some more information: http://forum.xda-developers.com/showthread.php?p=50901058
@DevShaft adding you just for the heck of it, maybe you've got an idea
Oh, by the way: when I got the phone, it was "running" (should say "stumbling") on branded firmware. I would guess prototypes would rather run on some other fw...

@steeserious
Thanks for the attention in participating in here, well, definitely we got the same issues, also, the service menu under bootloader unlock menu either freeze or gets opened after a while, and you get an FC msg but i click on ''waiting'' and also the sim-lock menu which it takes forever to open, if u are lucky it'll get opened with [?] each case!
except of the other screenshots i posted in the first OP, when i was trying to test the earpiece, under test menu, it freezes until i click on home or return button...
after u installed CM, do u get a beseband, wifi and cellular network working?

Yes, everything was working under CM10, and only CM10. Not 10.1 or 11. Also, Wifi was working with the oldest firmware or when flashing the ICS stock firmware module to the fw versions that didn't work with it.
I'd really like to get to the bottom of the problem though and get a stock rom running smoothly and fully working.
By the way, do they really make you send your phone all the way to the US if you're in Tunisia? Isn't there any local contractor for North Africa?

steeserious said:
Yes, everything was working under CM10, and only CM10. Not 10.1 or 11. Also, Wifi was working with the oldest firmware or when flashing the ICS stock firmware module to the fw versions that didn't work with it.
I'd really like to get to the bottom of the problem though and get a stock rom running smoothly and fully working.
By the way, do they really make you send your phone all the way to the US if you're in Tunisia? Isn't there any local contractor for North Africa?
Click to expand...
Click to collapse
yeah, i have seen custom roms with lots of bundles and options but i'm like u, i prefer the stock, the way it's polished and designed which is more sexier and faster than others...
well, first of all, we do have Sony Stores in here but they don't cover up a device or an electronic wasn't purchased from their store even if it's still under warranty.. but we do not have a sony repair service , cuz if i'd've bought it from one of their stores, they'd've send in to the nearest country with a repair service. let's say, like france.
So, what i did is , i sent an email to Sony customer services claiming my phone problem, but i didn't know the phone is still under warranty... so long story... explained to them that no repair service is available in my country, they advised to send the phone in for a repair, but they needed a valid US address. thanks god I have a friend, talked to them, and they agreed to give their home address... so yeah, provided Sony with a valid US address...etc, got some documents to print out, and RMA# in which they need to determine the phone's case and follow up thru the whole process... so eventually, sent to US TX with an express delivery took almost 5days, then the friend sent it in to Sony repair center in Laredo TX, been contacting sony for checking the phone's status repair, they don't disclose and/or have any detailed info, all they got me is : phone is still under repair, and yesterday i did call, and the ''chat agent'' said, ur phone was shipped, and yeah , my friend will pick it up tomorrow from UPS without knowing if they did repair or NOT, replace it or NOT... no clue bro...
told they , u should've at least send an email to the customer about the phone 's status repair, updates..etc. the agent was like, u will find a paper which contain all the info about the process was done to ur phone. so it's a kinda of a report.
omg so long story.. hope u enjoyed reading it :laugh:

[Q] Factory reset without knowing pin?

So basically someone (I don't know who, I was drunk, I thought it was a joke but no one has come forward) has set a pin on my phone and I can no longer use the thing.
I just want to be able to make phone calls again.
Is there anyway to factory reset my Sony Xperia Z1f without knowing the pin? What are my options basically?
Thanks,
Alex.

Go to Sony Service or the Store where you bought it, they will reset your phone a think for free.

eclyptos said:
Go to Sony Service or the Store where you bought it, they will reset your phone a think for free.
Click to expand...
Click to collapse
I was hoping to be able to use it this weekend *sigh*
Do I need the receipt/box or something? I bought it from a small importing company who have told me I will need to mail the thing to Sony at my own expense as the nearest service center is a 10 hour drive.
So there is literally no way for me to unlock my phone short of how ever many weeks it takes Sony to mail it back to me?

It's like the shop where I bought mine, they said I got Manufacturer Warranty so I will have to send the phone to Sony, but actually when I call them they will do this for me. Go there and ask them or call them.

Factory Reset the device with PC Companion.
It doesn't ask for a PIN when I just tried now.. I needed to FR mine for the 4.3 update, so I tested it for you

Wiltron said:
Factory Reset the device with PC Companion.
It doesn't ask for a PIN when I just tried now.. I needed to FR mine for the 4.3 update, so I tested it for you
Click to expand...
Click to collapse
Sorry what is PC Companion? Can you please post a little more info, would be super grateful. I have not been active on these forums in quite some time and am out of the loop haha

Also, I tried following this guide...
http://unlockbootloader.sonymobile.com/instructions
But I can't access the service menu on my phone from the emergency dialer like many YouTube videos show.
Why might this be?

Pc companion is a program for your Pc where u connect your phone and you can do loads of things like reset update etc...is made by Sony so just do a lil Google search and download it... Or go on Sony website
Sent from my C6903 using Tapatalk

alexhope21 said:
Also, I tried following this guide...
http://unlockbootloader.sonymobile.com/instructions
But I can't access the service menu on my phone from the emergency dialer like many YouTube videos show.
Why might this be?
Click to expand...
Click to collapse
This have nothing to do with your problem, it's for Unlocking Bootlader not the phone. If you do this, you will lose your warranty.
Go via PC Companion.

eclyptos said:
This have nothing to do with your problem, it's for Unlocking Bootlader not the phone. If you do this, you will lose your warranty.
Go via PC Companion.
Click to expand...
Click to collapse
Ok I got PC Companion and figured it out and have updated my phones software to the latest version.
But now after reading through these forums I think I would like to flash a custom ROM, however looking in the service menu my phone says that bootloader unlock is not allowed.
Is there someway to still unlock my bootloader and flash a custom rom?

alexhope21 said:
But now after reading through these forums I think I would like to flash a custom ROM, however looking in the service menu my phone says that bootloader unlock is not allowed.
Click to expand...
Click to collapse
This actually is a bad news.
alexhope21 said:
Is there someway to still unlock my bootloader and flash a custom rom?
Click to expand...
Click to collapse
No, if Unlock Bootloader Allowed say NO you can't unlock it, but you can flash custom roms with stock kernels and also root your phone. Unlock Bootlader is needed to flash custom kernels only.

[Q] Unlock bootloader wipes all data ?

Hello.
Im abit new to the forum but here goes.
Ive read tons of posts everywhere and there aint any exact answers anywhere to find.
In the past ive never known about the TA and DRM so happy as i am i just unlocked the bootloader on all the phones and still happy. The latest phone is the Xperia Z1. It has been abit buggy to say the least but im hoping software updates will cure this.
Anyway, i rooted my phone and unlocked the bootloader on the .681 firmware and now i am on .757 firmware. Using Doomlords kernel. I thought id check if i could backup my TA partition after unlocking the bootloader. And from what ive read its suppose to be wiped when you unlock the bootloader.
Well it was no problem backing up the TA partion. All files were there and it came out with no errors. So the question, how is this possible ?
I posted this same thing in General, sorry for that but i posted it here now so if a moderator finds this post in general then please delete it.
/Jonas740

If you Unlocked your Bootloader without Backup TA (DRM keys) first, then your DRM Keys are lost forever and you can Backup TA how much you want but there is no DRM Keys at all. The application to Backup TA do not give errors because you can backup partitions with or without DRM Keys, in the case you want switch between Locked and Unlocked Bootloader.
So long story short, you don't have DRM Keys, your warranty is lost forever, you cannot Update via OTA,PC Companion or SUS.

eclyptos said:
If you Unlocked your Bootloader without Backup TA (DRM keys) first, then your DRM Keys are lost forever and you can Backup TA how much you want but there is no DRM Keys at all. The application to Backup TA do not give errors because you can backup partitions with or without DRM Keys, in the case you want switch between Locked and Unlocked Bootloader.
So long story short, you don't have DRM Keys, your warranty is lost forever, you cannot Update via OTA,PC Companion or SUS.
Click to expand...
Click to collapse
The one time I had to use my warranty there was no problem with missing TA.
So there is hope for people without it
Sent from my C6903 using XDA Premium 4 mobile app

well.
HellRoot said:
The one time I had to use my warranty there was no problem with missing TA.
So there is hope for people without it
Sent from my C6903 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
dunno if the previous author saw what i wrote in my post but when i relocked my Xperia V using flashtool i could update with the pc companion or sony update or whats it called nowdays
And funny thing is, i actually have a case at Sony about this phone since i do have some issues with it but i think thats software related since ppl have been getting all sorts of errors from the KitKat firmwares. But i said how it was that i have unlocked bootloader and all that and she replied that my warranty was still valid and i could send it in for them to test it.
And i need to say this. Since sony posts an official way on their webpage, for ANYONE to read about how to unlock the bootloader and they also supply the code for unlocking it. Then i think it shouldnt affect the phone in any way or brake the warranty. (Sure it does say something about that, but all aint reading stuff like that). So if a developer wanted to unlock the phone. Why not have them contacting sony instead.
And surley, DRM keys (i just think sony shouldnt even bother having them) can be put back in if you let Sony do it. They put it there in the first place you know. And in the lovely electronic world we live in we all know that, if Sony can put thoose there, anyone could do it with the knowhow. But since the keys dont really mean anything, not that ive noticed you could really think about what use they actually do. And Sony knows that if ppl cant have the phone it was meant to be even with a unlocked bootloader, they will probably get some other phone or just whine hard enough so that Sony makes a software where everything works the same way with locked or unlocked. Camera stopped to work if you unlocked before 4.3 right ? What can you read about that like everywhere ? Loads of whining and Sony released a software that works just as good with locked or unlocked.
God damn this became a long post. So with this said im just saying. Why even bother in the first place having DRM keys if the rules dont apply anyway ? An everyday user doesent even need them either, he or she doesent even know what rooting or unlocking is anyway. And the ones that do know about it, also know about how to whine to get sony to fix the errors wich an unlock will produce

Jonas740 said:
dunno if the previous author saw what i wrote in my post but when i relocked my Xperia V using flashtool i could update with the pc companion or sony update or whats it called nowdays
And funny thing is, i actually have a case at Sony about this phone since i do have some issues with it but i think thats software related since ppl have been getting all sorts of errors from the KitKat firmwares. But i said how it was that i have unlocked bootloader and all that and she replied that my warranty was still valid and i could send it in for them to test it.
And i need to say this. Since sony posts an official way on their webpage, for ANYONE to read about how to unlock the bootloader and they also supply the code for unlocking it. Then i think it shouldnt affect the phone in any way or brake the warranty. (Sure it does say something about that, but all aint reading stuff like that). So if a developer wanted to unlock the phone. Why not have them contacting sony instead.
And surley, DRM keys (i just think sony shouldnt even bother having them) can be put back in if you let Sony do it. They put it there in the first place you know. And in the lovely electronic world we live in we all know that, if Sony can put thoose there, anyone could do it with the knowhow. But since the keys dont really mean anything, not that ive noticed you could really think about what use they actually do. And Sony knows that if ppl cant have the phone it was meant to be even with a unlocked bootloader, they will probably get some other phone or just whine hard enough so that Sony makes a software where everything works the same way with locked or unlocked. Camera stopped to work if you unlocked before 4.3 right ? What can you read about that like everywhere ? Loads of whining and Sony released a software that works just as good with locked or unlocked.
God damn this became a long post. So with this said im just saying. Why even bother in the first place having DRM keys if the rules dont apply anyway ? An everyday user doesent even need them either, he or she doesent even know what rooting or unlocking is anyway. And the ones that do know about it, also know about how to whine to get sony to fix the errors wich an unlock will produce
Click to expand...
Click to collapse
closed for being a duplicate.
use this link for other thread.
http://forum.xda-developers.com/showthread.php?t=2730169

Is this weird or normal?

I searched high and low for solution of my problem but i couldnt find the right solution to my problem that's why I'm starting this thread.
Phone- Xperia Sp C5302
Stock Kernel
Rooted
Philz Touch recovery installed
Nandroid backup made using TWRP
Tried to unlock bootloader- Problem starts from here........
Initially phone rebooted normally but couldn't detect sim and signal.
Then phone started rebooting after few minutes . Stay on for a while then reboot again till battery died.
Now battery not charging, phone showing no life, no led, no vol up+power, vol- power , vol up+vol down+power work
Tried everything I know plz help and plz explain slowly and calmly.
THANKS IN ADVANCE.
EDIT:
Used wall charger 2amp for charging left overnight no red led or anything as described in other posts
Connected to laptop left for about 4 hours no nothing.
Tried to connect in fast boot not detected.
Any more ideas guys at least give some pointer for what to do or is my Sp is actually dead ? And I can't restore my backup? Plz guys help
EDIT: Pressed the small button at the back and the phone came back to life YESSSSS........

Now the phone isn't showing imei no. or sim or network. But when restarted it imei and network came back magically. So I thought the problem is solved to confirm it I switched phone off again then switched on then imei and network gone again and also baseband isn't showing too (I'm sorry if it is the same thing I'm a newb to this stuff)
Then again I restarted the phone number it came again. I don't know what to do in this situation. I just wanted to unlock bootloader and install xenon hd rom in my Xperia Sp.

Zeemanv2 said:
Now the phone isn't showing imei no. or sim or network. But when restarted it imei and network came back magically. So I thought the problem is solved to confirm it I switched phone off again then switched on then imei and network gone again and also baseband isn't showing too (I'm sorry if it is the same thing I'm a newb to this stuff)
Then again I restarted the phone number it came again. I don't know what to do in this situation. I just wanted to unlock bootloader and install xenon hd rom in my Xperia Sp.
Click to expand...
Click to collapse
Try flashing stock ftf with Flashtool.
If the problem gets solved, then start with the new ROM.

Zeemanv2 said:
Now the phone isn't showing imei no. or sim or network. But when restarted it imei and network came back magically. So I thought the problem is solved to confirm it I switched phone off again then switched on then imei and network gone again and also baseband isn't showing too (I'm sorry if it is the same thing I'm a newb to this stuff)
Then again I restarted the phone number it came again. I don't know what to do in this situation. I just wanted to unlock bootloader and install xenon hd rom in my Xperia Sp.
Click to expand...
Click to collapse
Use the method answered by the previous post. But I will add into that
You can use the flashtool to flashing everything stock but please dont flash System and Kernel. If you flashed a custom recovery and want it to stay untick Fotakernel as well.
This should fix your problem without having to deal with the stock ROM.
But if problem persists then I would suggest a complete stock ROM flash.
Huge chance that the process of unlocking your bootloader is faulty. Are you sure that it went without errors? Anyway you might also wanto to try to relock and then unlock the bootloader again

@Zenith I left the phone idle for sometime now it's OK ish . I've made a nandroid backup but can u tell me plz which folder contains imei and other important stuff so I can make a backup of it too.
BTW I think my bootloader is not correctly unlocked coz pc companion is detecting my phone bravia engine is there gracenote is working. But in service menu under configuration I found: Bootloader unlocked: Yes.
Previously it was Bootloader unlock: Yes. So is it unlocked or not if not then how to unlock?
I've followed sony's official unlocking method.

Zeemanv2 said:
@Zenith I left the phone idle for sometime now it's OK ish . I've made a nandroid backup but can u tell me plz which folder contains imei and other important stuff so I can make a backup of it too.
BTW I think my bootloader is not correctly unlocked coz pc companion is detecting my phone bravia engine is there gracenote is working. But in service menu under configuration I found: Bootloader unlocked: Yes.
Previously it was Bootloader unlock: Yes. So is it unlocked or not if not then how to unlock?
I've followed sony's official unlocking method.
Click to expand...
Click to collapse
You don't need to backup imei. It will stay the same no matter what ROM you use.
and You can use Titanium Backup to backup all your important apps and data. But do not backup/restore system apps.
and in the service menu;
"Bootloader Unlock allowed - Yes" means that your Bootloader is Locked, and you can unlock it.
"Bootloader Unlocked - Yes" means that your Bootloader is unlocked.
Bravia engine shouldn't work if your BL is unlocked, so something must have gone wrong in the process.
Follow what's said in post #4.

@Zenith Thank you for your wonderful suggestion i will do as u say. bt one big noob ques- Do i have to dload a ftf file to flash to stock cant i use my backup or someyhing from it to restore?
@TechnoSparks yeah i think you are right about my bootloader bt isnt there something to check if BL is unlocked correctly. Btw when i requested to unlock BL in fastboot nothing really happened apart from
<Bootloader > Unlock phone requested
OKAY [15.725s]
finished. total time: 15.725
Then restared approx every 10 min or so till battry went flat and phone being dead untill i reseted it via pin

Zeemanv2 said:
@Zenith Thank you for your wonderful suggestion i will do as u say. bt one big noob ques- Do i have to dload a ftf file to flash to stock cant i use my backup or someyhing from it to restore?
Click to expand...
Click to collapse
Yes, you have to download the ftf file.
Use this one.
and don't use the latest version of Flashtool, use the "0.9.18.5" version.

@Zenith Thanks bro bt my model is C5302 will it be compatible?
And i just dloded 0.9.18.6 version. its not latest 0.9.19.0 ver is latest.
So do i have to dload again? (connection limited bandwith n slow speed)

@Zenith Sorry bro for bugging you again n again bt u r the only person who showed some intrest in this post and helping me.
Btw ive founded this"https://drive.google.com/file/d/0B-mh6JO-ztBfaGZ6UE1QanFzRTg/edit?usp=sharing" C5302 Indian generic 12.1.A.1.201 [FTF] Is it better?

Zeemanv2 said:
@Zenith Thanks bro bt my model is C5302 will it be compatible?
And i just dloded 0.9.18.6 version. its not latest 0.9.19.0 ver is latest.
So do i have to dload again? (connection limited bandwith n slow speed)
Click to expand...
Click to collapse
You should flash ftf specified for C5302 then.
Download the C5302 variant that you prefer from here.
And try flashing with the Flashtool you have. If it doesn't work properly, then uninstall it, and install the 0.9.18.5 version.
Some members including me faced some problems on the next 2 versions of flashtool. So yeah..
---------- Post added at 01:26 AM ---------- Previous post was at 01:24 AM ----------
Zeemanv2 said:
@Zenith Sorry bro for bugging you again n again bt u r the only person who showed some intrest in this post and helping me.
Btw ive founded this"https://drive.google.com/file/d/0B-mh6JO-ztBfaGZ6UE1QanFzRTg/edit?usp=sharing" C5302 Indian generic 12.1.A.1.201 [FTF] Is it better?
Click to expand...
Click to collapse
It's okay
And as I have a different model, I can't actually assure you that it works or not.
So try and see what happens.

Thanks bro will surely let u know.

Zeemanv2 said:
@Zenith Sorry bro for bugging you again n again bt u r the only person who showed some intrest in this post and helping me.
Btw ive founded this"https://drive.google.com/file/d/0B-mh6JO-ztBfaGZ6UE1QanFzRTg/edit?usp=sharing" C5302 Indian generic 12.1.A.1.201 [FTF] Is it better?
Click to expand...
Click to collapse
Even you can flash C5303 ftf on C5302. I personally use Singapore variant .207. It has got least bugs and it is fast and much bloatware free.
P.S. Dont flash .201 it has got a lot of bugs.

SIM not working

Hi all, yesterday I flashed .101 using Flashtool (from .222) but the Flashtool binaries were corrupted and something went wrong and got bootloop. Today I used a different PC and at least it has been possible to install a custom ROM (.222) but the network is not working now. The PIN is requested but sometimes it fails and sometimes it just accept the PIN but there is no network. WiFi works fine. I have used this Xperia for more than a year and working well. My device is C6603 bootloader locked.
Thank you!

victor141516 said:
Hi all, yesterday I flashed .101 using Flashtool (from .222) but the Flashtool binaries were corrupted and something went wrong and got bootloop. Today I used a different PC and at least it has been possible to install a custom ROM (.222) but the network is not working now. The PIN is requested but sometimes it fails and sometimes it just accept the PIN but there is no network. WiFi works fine. I have used this Xperia for more than a year and working well. My device is C6603 bootloader locked.
Thank you!
Click to expand...
Click to collapse
First of all, you can't flash a custom FW without unlocking the bootloader. If you so choose to unlock it, make sure you backup TA partition - it's used for DRM storage which is used for advanced camera functions (like noise canceling in pics, bravia engine and other sony stuff). Second just flash a proper FW with flashtool, wipe everything and see if it works.

Sebi673 said:
First of all, you can't flash a custom FW without unlocking the bootloader. If you so choose to unlock it, make sure you backup TA partition - it's used for DRM storage which is used for advanced camera functions (like noise canceling in pics, bravia engine and other sony stuff). Second just flash a proper FW with flashtool, wipe everything and see if it works.
Click to expand...
Click to collapse
Yes, you can flash a custom ROM based on stock with locked bootloader. It's what I have done successfully dozens of times, but my problem is as described in the OP, now I have a 5.1 android installation running well except the network data that doesn't work at all.

victor141516 said:
Yes, you can flash a custom ROM based on stock with locked bootloader. It's what I have done successfully dozens of times, but my problem is as described in the OP, now I have a 5.1 android installation running well except the network data that doesn't work at all.
Click to expand...
Click to collapse
You could try to use sony pc companion to repair your phone. Sometimes, when it comes to corrupted data, flashtool won't do much good - it's something related to the TA partition that pc companion is good at fixing (I had some bootloops caused by bad root and flashtool couldn't help). You could try it and see if it works and if it does, use flashtool after to flash the rootable 5.02 and continue with the root.

Sebi673 said:
You could try to use sony pc companion to repair your phone. Sometimes, when it comes to corrupted data, flashtool won't do much good - it's something related to the TA partition that pc companion is good at fixing (I had some bootloops caused by bad root and flashtool couldn't help). You could try it and see if it works and if it does, use flashtool after to flash the rootable 5.02 and continue with the root.
Click to expand...
Click to collapse
OK, I just did it and didn't work, but this thing happened: Just after repair (using PC Companion) it booted and the text was chinese! I'm spanish, my PC language is spanish, my previous smartphone language was spanish... I don't know what is happening here but I thing this chinese thing is related to the SIM problem.

victor141516 said:
OK, I just did it and didn't work, but this thing happened: Just after repair (using PC Companion) it booted and the text was chinese! I'm spanish, my PC language is spanish, my previous smartphone language was spanish... I don't know what is happening here but I thing this chinese thing is related to the SIM problem.
Click to expand...
Click to collapse
Somehow related but it isn't uncommon. I had an Xperia ZR bought from an official local retailer and when I opened the box I had a weird charger and first boot was in chinese. Sometimes they bring phones made for hong kong or signapore and sell them on european markets. 5.11 update might have different api s for the sim card, so different regions might not be compatible. This is only a speculation. Pc companion flashes the latest FW acording to your phone boot version, ets and customization. Imma PM you for more details.