[Sony Xperia ZR] sandeepxperia:
Hello Xperia ZR users,

I had dual recovery i flashed RR M and RR N rom's in a single day. the next day i restored stock rom which i have backup approximately 5.30 gb it took so much time to boot whole 60 percent charging had been gone so i flashed stryflex mm rom for sony look but again i thought to use stock rom so this time i restored stock backup rom through otg pendrive because my external storage got write permissions problem when i installed stryflex! but now also same happened device taking so much time to boot and i thought to flash rr nougat but i wiped everything through dualrecovery and i removed battery as dualrecovery not showing anything in otg pendrive now there is also no recovery available to flash anything!

Xda user Robin guided me to flash stock rom through firmtool but ended with errors in xperia firmtool log file!

So now i am having black blank screen! no recovery unlocked bootloader! i had installed adb drivers through flashtool drivers and also installed other universal adb drivers but pc is not showing my device in adb devices list in command prompt! My device is showing in Device manager as ADB interface! when i connected my phone through fastboot mode !

Please help me!

SOLUTION : If u are using custom roms and want to go back to stock rom 5.1.1 ?! and while flashing are u experiencing blank screen after a successful flash through flashtool or experiencing any errors in flashtool while flashing?! Well there are two methods to flash stock roms! Successfully!!

Method 1 : whatever the custom rom you are in! Just flash the stock 5.1.1 rom in your phone through flashtool but with other pc! Yes other pc, pc with no drivers installed regarding adb! Try out your friends laptop or pc! Don't forget to install flashtool, fastboot and your xperia model drivers through flashtool drivers exe file! which is located in c drive!! Also install adb setup file that install all drivers all over pc! And just flash the stock 5.1.1 rom through flashtool! There are 99.99999% chance that stock rom will be successfully flashed in your phone! If this doesn't work!! It's your bad luck and its definitely pc problem not your phone! Then just follow method 2 to flash the rom!

Method 2 : flash the twrp img through flashtool (use any flashtool version!) by entering into fastboot mode and select flash the kernel option and select the twrp img file in your pc (i mean u have to download the twrp 3.0.3 img and use it ! ) twrp will be successfully installed in ur phone and then flash the stock jellybean 4.1.2 version the download link is available below! it is an ftf file convert the ftf file into zip file and then flash through recovery! that's it u will be booted to stock jb firmware and it will ask to factory reset on first boot press yes option it will take few minutes and then it will be booted to jb rom!! restore drm keys if u have the backup and update the os through xperia companion!! or else flash the 5.1.1 zip through recovery!

Note: only flash the jb rom i tested flashing kitkat it doesn't worked!

Stock jellybean firmware Link:

https://xdaforums.com/showthread.php?t=2384512

PRFCreator tool:

https://xdaforums.com/crossdevice-dev/sony/tool-prfcreator-easily-create-pre-t2859904