Your board is stuck, or "bricked." Standard methods aren't working. The Solution: You hunt down AndroidTool_Release_v2.71
processors (like the RK3399 or RK3328). In the community, this specific release is often seen as the "reliable old friend." When newer versions failed or were hard to find, v2.71 was the version users hunted down in forums like to successfully flash their devices. 电子发烧友网 The "Resurrection" Plot androidtool-release-v2.71
: Obtain the latest package from the official repository or trusted developer forums. Your board is stuck, or "bricked