[Q] How to go back to stock? - black rear camera problem and bootloop

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BigBrother84

Senior Member
May 25, 2019
159
41
Hi,

I experienced black rear camera bug on Official LOS16 (I have to admit that i had made backup and tested carbon and LOS17) Now i installed 17 to test if is it ROM problem but i think it is unfortunatelly hardware problem. I saw other threads and searched internet and decided to install stock branded marshmallow, lock bootloader (Yes, I had backup TA before UB) and send it to official Sony service because I should still have warranty.

But...
I don't know how to install stock ROM. I downloaded branded software from XperiFirm and stopped there. How to flash it and not brick device? Newflasher is for newer models. Flashtool needs .ftf file. I searched how to convert XperiFirm package to .ftf on other model but there is step where you have to decrypt some files (I couldn't find them in downloaded software package). :confused:

I thought about second option - format and wipe in twrp all internal partitions and use Xperia Companion Software Repair. Actually I don't know does it work properly with UB devices...

I decided to go to the unofficial Sony devices service if it'd be problem with sending it to official Sony service.

What do you suggest? Is it easy and cheap enough repair for unofficial service not to damage device? I have no tools in home neither any preferences or experiences to do that by myself. Should I skip installing stock and go straight to the unofficial service?

If you suggest relocking device please help me and write step by step, noob friendly instruction how to flash XperiFirm package by flashtool or post made that way tutorial.

If you can help me, thank you! :)
 
Last edited:

BigBrother84

Senior Member
May 25, 2019
159
41
After long brake I decided to flash stock, after I got problems with lineage.

Flashtool downloaded and prepared necessary files and flashed successfully firmware. (as you said it should :good: )

Next when I reboot, got bootloop.

Tried Xperia companion, it said that my phone is unlocked and it won't proceed

So tired flash twrp from NeoArians lineageos17 thread using fastboot flash recovery

Nothing and reboot to stock with bootloop

Tried to boot in twrp using command fastboot boot

Black screen and force shutdown

Tried to flash another firmware branded for my country

Again bootloop

Maybe there is another ftf which I should flash, not that one from xperifirm?

Hmh I'm run out of ideas, please help me.


Summary What I have:
-Xperia Z3 Compact with not working camera and flashed stock firmware.
-Bootloop
-ta partition backup
-working flashtool, xperifirm and Xperia companion
-Adb and fastboot


If you know what I did wrong, please tell me. I'd be very grateful if someone help me
 
Last edited:

pawloland

Senior Member
Jan 23, 2019
182
69
After long brake I decided to flash stock, after I got problems with lineage.

Flashtool downloaded and prepared necessary files and flashed successfully firmware. (as you said it should :good: )

Next when I reboot, got bootloop.

Tried Xperia companion, it said that my phone is unlocked and it won't proceed

So tired flash twrp from NeoArians lineageos17 thread using fastboot flash recovery

Nothing and reboot to stock with bootloop

Tried to boot in twrp using command fastboot boot

Black screen and force shutdown

Tried to flash another firmware branded for my country

Again bootloop

Maybe there is another ftf which I should flash, not that one from xperifirm?

Hmh I'm run out of ideas, please help me.


Summary What I have:
-Xperia Z3 Compact with not working camera and flashed stock firmware.
-Bootloop
-ta partition backup
-working flashtool, xperifirm and Xperia companion
-Adb and fastboot


If you know what I did wrong, please tell me. I'd be very grateful if someone help me
For every bootloop of sony device use Emma (flashtool from sony). It's cure for everything.

EDIT: it will of course delete everything from a device.
 
Last edited:
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    If you use Xperifirm within Flashtools, it should download and automatically repackage it to an FTF file.

    Or https://forum.xda-developers.com/z3-compact/general/ref-roms-guides-tutorials-faqs-t3035066
    1
    After long brake I decided to flash stock, after I got problems with lineage.

    Flashtool downloaded and prepared necessary files and flashed successfully firmware. (as you said it should :good: )

    Next when I reboot, got bootloop.

    Tried Xperia companion, it said that my phone is unlocked and it won't proceed

    So tired flash twrp from NeoArians lineageos17 thread using fastboot flash recovery

    Nothing and reboot to stock with bootloop

    Tried to boot in twrp using command fastboot boot

    Black screen and force shutdown

    Tried to flash another firmware branded for my country

    Again bootloop

    Maybe there is another ftf which I should flash, not that one from xperifirm?

    Hmh I'm run out of ideas, please help me.


    Summary What I have:
    -Xperia Z3 Compact with not working camera and flashed stock firmware.
    -Bootloop
    -ta partition backup
    -working flashtool, xperifirm and Xperia companion
    -Adb and fastboot


    If you know what I did wrong, please tell me. I'd be very grateful if someone help me
    For every bootloop of sony device use Emma (flashtool from sony). It's cure for everything.

    EDIT: it will of course delete everything from a device.
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