Relock bootloader OnePlus Devices

Download the latest FW files from here

1. Install TWRP (OnePlus 5) and Magisk if you don't have them yet.
   
2. Magisk should allow you to slide "OEM unlocking" to "enabled" in developer settings (THIS IS IMPORTANT)
   
3. Reboot to fastboot (Refer to my older post if you do not know)
   
4. Flash stock recovery via fastboot. (Refer to my older post if you do not know)
   
5. Run locking via fastboot flashing lock command
   
6. Allow it to reboot and upon start up it will say device corrupted (THIS IS NORMAL)
   
7. Boot to recovery via the warning start screen.
   
8. Once in recovery, sideload latest FW.
   
9. Done & have profit.
   

Please comment if you face any issue or for any query.

Flash .img/sin/elf Kernel Using Flashtool

Steps to follow:

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Now you have the the CUSTOM kernel: in form of a boot.img or a boot.sin or a boot.elf

You copy the Kernel[boot.img] file to flashtool directory (C:\Flashtool\x10flasher_lib).

Ensure your Device is in MSC Mode, USB Debugging is ON and Unknown Source install checked.

Disconnect Device & connect in fastboot mode.

To move to fastboot mode; hold the Menu key (Search Key if available) and connect it to the computer.

The blue LED will light up.

Now launch flashtool & click on the flash then select "Fastboot Mode"

Now there comes up the toolbox where you choose "select kernel to flash"

A new browse window will open and It will now ask to supply the kernel image path.

Now browse to the boot.img (or the boot.sin/boot.elf) that we copied to flashtool directory.

See the log... Flashing Done.


For any queries, Please leave comments bellow.

HELP MAKES ALL HAPPY

Unlock & Relock bootloader using Flashtool (Android-Sony Xperia)

Unlock your bootloader

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a) download and install latest Flashtool from here

b) start Flashtool and click on BLU button on the top

c) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button (to boot in Flashmode)

d) click on get unlock key button, it will switch you to Sony Mobile website (For Sony Phones Only), here complete all boxes

e) copy IMEI form Flashtool to Sony Mobile site, than you will get unlock code to your mailbox

f) copy unlock key to Flashtool window and than click unlock

g) connect phone with holding menu button when Flashtool shows pop up window

h) wait to unlock finish.

Relock your bootloader

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a) start Flashtool and click on BLU button on the top

b) turn off your phone and when Flashtool shows pop up window, connect phone to PC with holding volume down button (to boot in Flashmode)

c) just click on relock button and your bootloader is locked for now


For Flashboot Mode: Press back Key or for Touch Navigation Key model, Press Volumn Down Key

For any queries, Please leave comments bellow.
HELP MAKES ALL HAPPY

Backup Original Firmware (ROM) using FlashTool (Xperia Device)

Steps:

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a) if you do not want to lose warranty of your phone, first thing you have to do is to backup your original customization

b) download Sony Update Service (SUS) and reinstall firmware of your phone (backup your data first)

c) after that, go to Program Files and search for folder db/some Number/blob_fs, there you find 3 files, which names start FILE

d) download and install latest Flashtool from here

e) paste the three files, which names start FILE, from blob_fs folder to folder "Firmware" included in the XPERIA Flashtool

f) open the Flashtool, click on Advanced, choose decrypt files and put all three files from blob_fs folder to the right columm

g) click ok and after approx. one minute a pop up Window will appear via Flashtool

h) mark all files and transfer them to the right column, than fill in a box in the right upper corner (fill in what you want, it is just for you)

i) now click ok and Flashtool will create backup of your original firmware customization, that you can anytime flash to your phone

For any queries, Please leave comments bellow.

HELP MAKES ALL HAPPY