Unofficial bootloader unlock method on Realme 9/Q5 SM6375 without deeptest

A guide describing an unofficial method to unlock the bootloader on Realme 9/Q5 based on SM6375, without the need to use deeptest.

Special thanks to @andreyduhen, @cactus_asot and @kanteavaa! ❤️

Requirements:
- Realme 9/Q5 based on chipset SM6375 (RMX3471, RMX3472, RMX3474 or RMX3478),
- Factory USB Cable,
- Windows 10/11 device,
- Basic knowledge of handling commands in the terminal,
- Shizuku,
- aShell,
- Android SDK Platform-Tools,
- Google USB driver,
- Qualcomm USB Drivers,
- Oscar UBL Tool,

Before starting:
- back-up all data (unlocking the bootloader will result in the loss of all data on the device),
- remove Google account,
- remove lock screen protection,

Warning:
Follow the instructions exactly as described below. Don't try to be clever or take shortcuts unless you want to permanently damage your device. The method for unofficially unlocking the bootloader is based on operating the device in service mode (EDL mode), which involves replacing sensitive partitions of the device. The decision to attempt to unlock the bootloader is yours, knowing that if you do something wrong, your device will be permanently damaged beyond repair.

To Be Continued...

example fastboot command