What is a brick?If there is no usual way to recover your mobile, then it is called brick in my opinion. That means if you can't able to go to recovery and fastboot mode or the device is just blank with no sign of life.
When brick happens?It will happen because of locking bootloader with custom images or just because of Mediatek/Realme strange behaviour.
What we have to do if brick happens?Simply we have to flash stock firmware with Smart Phone Flash Tool(aka SPFlash Tool). With only SPFlash Tool we can't do anything, since we don't have permission for it. But with the advent of MTK-bypass, we can have full control over our device. If we don't have this MTK-bypass, then we have search for costly alternative's.
You can't flash only if your eMMC is damaged, which is the worst case because oppo phones are prone to eMMC failure.
Where to get firmware to flash?Download decrypted .ofp firmware from https://drive.google.com/file/d/1SOmRxix9_UtjOLLanXPYxf4YK1NrA_RW/view
Thanks to @bx2_nero for it.
What is the procedure for using MTK-bypass and SPFlashTool?MTK-bypass is a Python script and it needs different USB ways for working. So with these two in place, we can get our work done.
Linux UsersFor Linux we have to use FireISO or patched kernels for working of MTK-bypass.
Use the Linux guide by @bx2_nero at https://forum.xda-developers.com/t/...our-realme-6-6i-india-6s-linux-method.4251077
Windows UsersFor Windows we have to use libusb32 filter for MTK-bypass working.
Use the guide by @daeSundae at https://forum.xda-developers.com/t/...india-6s-using-spflash-tool-for-free.4222027/
MTK-bypass Official instructionsSee Github ReadMe at https://github.com/MTK-bypass/bypass_utility and XDA support thread at https://forum.xda-developers.com/t/mod-dev-mediatek-mtk-auth-bypass-sla-daa-utility.4232377/
Creditsxyzz / xyz`: GitHub | XDA
chaosmaster / k4y0z: GitHub | XDA
Dinolek: GitHub | XDA