Oppo A11k Custom Rom Link

: Since the A11k launched with Android 9/10, it supports Project Treble. If you cannot find a dedicated custom ROM, you can often flash a GSI (like LineageOS or Pixel Experience) using a compatible custom recovery. Debloated Stock ROMs

Check the OPPO MediaTek Development GitHub for updated device trees and files specifically for this hardware family. 5. Detailed Flashing Guide Once in TWRP recovery: oppo a11k custom rom link