It looks like you're referencing a forum post title about the software running on Android for MTK devices, claiming it works without a physical "box" (dongle).
As of my last knowledge update, here is the critical reality check: Avengers Box Android MTK Fully Working NO BOX W...
Avengers Box (like Octoplus, UMT, Z3X, etc.) requires a physical USB dongle/license to unlock full functions (flashing, resetting FRP, repairing IMEI, unlocking bootloader). Any APK or tool claiming "NO BOX" is almost certainly a cracked/pirated version . It looks like you're referencing a forum post