1. Flash stock s272
Read first post carefully! You don't need to unlock bootloader you need to flash unlocked bootloader via QFIL!I am facing the same problem ,i cant seem to unlock bootloader and flash recovery.
I flashed S285, what do i have to do next, flash rawprogram_unlock.xml and rawprogram_twrb.xml from the S272 ?
Flash rawprogram_unlock.xml (don't copy anything) reboot and flash rawprogram_twrb.xml.
Thank you man, after a couple of tries it worked ,
Bro flashed s285 rom.
Did so and it was already working on S272 but anyhow managed to get it working after flashing with QFIL and when the mobile is rebooting immediately press volume keys and it went into TWRP.
Please reboot several times in to recovery and check if it's finally permanent.
You can install permanent TWRP using "Install Image" in temp TWRP. But be carefull, you need to select recovery partition, not any other!
You just need version ARMx64 and nothing specific, just install via recovery.
Install ADB+Fastboot with drivers (I recommend this installer)
Enable ADB debugging on your phone (in Settings->Developer Options)
After connecting the phone to the PC, pop up may appear, tick Always allow from this computer and click OK
Extract downloaded recovery zip and copy .img file to C:/adb
Now open cmd line (press Start+R, type "cmd", press OK) and go to C:/adb (type "cd C:/adb" and hit Enter)
Reboot into bootloader (fastboot mode) (type "adb reboot-bootloader")
Your phone should now reboot into the bootloader (Little green android logo in the middle of the screen)
Flash the recovery.img (type "fastboot flash recovery recovery.img")
(*) Now boot into the recovery (type "fastboot boot recovery.img")
(*) Mount /system partition (In TWRP go to Mounts and tick System)
(*) [b]In TWRP open File Manager, go to /system and rename recovery-from-boot.p to recovery-from-boot.p.bak[/b]
Finally, reboot!
Done!
* You should do these steps only if you have Lollipop firmware (to prevent from TWRP being overwritten by stock recovery on each boot)Update: Now with working S285 and NFC and rooted. Used LTE Discovery in root mode and it says both bands 3 and 7 are active. So flashing ROW rom over CN rom apparently does unlock the bands...I want to say for the record many thanks for the instructions below and for the links provided. I bought at p1c72 it came with chinese ROM that was partially translated into English, Play Store was working though. But OTA was disabled.
I followed below instructions and completed "Flashing ROM". Now, it is p1a42. And NFC WORKS! (Confirmed by tapping in and out of the metro this morning).
So, for now I will not be touching this any further like root/ unlock bootloader etc in case this breaks NFC. I did notice however, I cannot update new OTAs as the download mode (bootloader) is still in Chinese, but THAT's OK!
Btw, any way to check which LTE bands are enabled/ being used?
And band 20?
it is easy
If you flash back S282 you will get original bootloader back, but you will also lose twrp recovery and root.
