: You will need to install a recovery like OrangeFox or TWRP to flash the ROM files.
Flashing will wipe all data. Back up photos and files. oppo a11k custom rom link
: This is the first required step. On Oppo MTK devices like the A11k, you typically need to enable OEM Unlocking in Developer Options. Install a Custom Recovery : You will need (Team Win Recovery Project) or PitchBlack Recovery to flash the ROM zip files. Installation Steps (Brief) Download the (if not included) to your SD card. Boot into TWRP Recovery. Advanced Wipe and select Dalvik, Cache, System, and Data. , select your ROM zip, and swipe to flash. Flash GApps (if needed), then Reboot System : You will need to install a recovery