ALL MANIPULATIONS WITH THE PHONE ARE DONE AT YOUR OWN RISK, IF YOU DO SOMETHING WRONG, YOU HAVE A CHANCE TO GET A BRICK
During flashing, data on the phone will be erased several times, do not set passwords and accounts, remove all passwords before starting.
Required files:
https://drive.google.com/file/d/1CjFX_D1UfkXsoQvh--YkUSLIDLcihWUZ/view?usp=drive_link - Platform-Tools_AllInOne zip
https://gauss-componentotacostmanual-sg.allawnofs.com/remove-22cf5d03e718f344e176acd01897b085/component-ota/24/03/01/d7b6cbb931634b8c8fb89b5d02d5c553.zip - OxygenOS 14.0.0.500 IN (You can take your version of the firmware)
https://drive.google.com/file/d/1_QEVtBKu0F8Ayez36fCY9Sp7JondGkLd/view?usp=drive_link - my_company.img & my_preload.img
https://drive.google.com/file/d/1uAiIbMtyGKwyEUHaspdGS_DXx2D5Qiw7/view?usp=sharing
https://drive.google.com/file/d/1r1AyA_95yXpjsND1p_A3R5PcM5DGucEO/view?usp=sharing — patch fix mobile network
You need an original charging cable, a stable internet connection and a computer that is very stable and will not shut down And the phone must be charged.
I used this firmware, flashed it the first time, and then when the phone turned on (first setting) I went to updates and downloaded the 830 version of the firmware, updated it.
You need to download it all, and for convenience, I put it all in one folder
You also need adb and fastboot drivers.
in the folder that you unpacked platformtools-all-in-one, you need to transfer the payload.bin file that you downloaded from the firmware to Oxygen OS 500 India.
While it is being copied, on the phone, get developer rights (in the firmware version) and enable bootloader unlocking (EOM unlock) and USB debugging in the developer menu
Now when the payload file is copied you need to find the extract-payload file and run it, it finds the payload file in this folder and extracts it
the firmware "extract-rom-name" folder appears on top
it will take ~5 minutes and at the end the window will say "finished press any key"
you can still connect the phone to the computer, select file transfer and confirm USB debugging
now you need to reboot the phone into bootloader mode, there is a command adb-fastboot-bootloader, a window asking for USB debugging will appear, you need to confirm.
And the phone will reboot into fastboot, wait until the fastboot mod appears, there will be an inscription to the bootloader is blocked and you need to unlock it, for this you need to select the file "fastboot-flashing-unlock" in the folder.
In the phone, choose to unlock the bootloader with the volume buttons and confirm with the power button, it will reboot with the unlocked bootloader and data reset.
Color OS will load like the first time, then choose the language and skip everything, don’t set passwords, don’t connect Wi-Fi, just skip everything.
You need to get developer rights again, and check if there is USB debugging.
According to the idea, you should have already finished unpacking the firmware, so let's move on to step number two.
Rename this folder to ROM, and you need to copy to the firmware folder (which you just extracted) the two files you canceled (my company and my preload), THIS IS MANDATORY.
Connect the phone to the computer via USB, and give permission for USB debugging.
FIRMWARE PROCESS, IT IS VERY IMPORTANT THAT THE PHONE DOES NOT MOVE IN ANY WAY AND THAT YOU HAVE A STABLE CONNECTION, because it will be bricked.
In the folder with files, rotate the adb-reboot-bootloader file, enter developer mode (where you can see that the bootloader is unlocked).
Now in the file folder find the fastboot-unbrik command (this is a command for flashing).
You launch it and wait, a tweak appears and you can see the flashing process.
During this process, the phone will reboot from fastboot mode to recovery mode, this is normal, errors may occur, DO NOT TOUCH, DO NOT CHANGE, DO NOT TOUCH THE PHONE.
If you rip the firmware at some point there will be a brick☠
It will take about 20 minutes to flash, it will flash everything, reboot, go from fastboot to ricaver, a choice of languages will appear, maybe something else - DO NOT TOUCH.
When the firmware is finished, this window will say - unbrik completed. Press any button
Do not press anything until then
Now the phone will boot into data wipe, go in, enter the code in the window that says (it says: enter the verification code : code) and confirm the data wipe.
The OS oxygen is loading, you also skip all the screens at the start, skip everything.
Now you have two options -
the first is to flash the same firmware:
Connect the phone, allow file transfer, download to the phone the archive with the firmware that you downloaded and flashed, and then open the developer rights, go to updates - three dots - update from file - start updating the same firmware from the file
The second option (I did it):
Immediately go to system updates, the OTA update for 830 firmware arrives (new, July) and download and update the system.
THE SECOND TIME TO UPDATE THE SYSTEM (FLASH THROUGH THE UPDATE) IS VERY IMPORTANT
And then, when you update for the second time, you need to check if you have problems with the mobile network, if so, you need to use the patch.
The link to the patch along with all the files, you need to install it before blocking the bootloader if you are going to block it
If you lock the bootloader, you will not be the only one to install the OTA update, because the mobile network will be down, and you will need to unlock the bootloader again and do the patch.
The patch archive contains instructions, the first steps are to unlock the bootloader, and then install the patch and flash it
It's self-explanatory, so I won't describe it.
So, if you did everything right, you will have a working mobile network and the latest firmware version, now you can block the bootloader .
In the folder with all the files, select the command to enter the fastboot, and then the command "fastboot-flashing-lock"
And now you will boot up again, and you can customize the system for yourself. You will have a blocked bootloader, which means that the NFC will work, and the mobile network will work.
In principle, this is the entire instruction
If you have any questions, don't hesitate to ask.
