The term is not an official Google or Huawei application. Instead, it is a colloquial term that refers to several tools and scripts designed to read, extract, or interpret information via Fastboot mode.
Only use open-source tools (PotatoNV, open-source Python fastboot scripts) or trusted commercial tools (HCU, Octoplus). Never pay for a "Fastboot Reader" that promises to unlock a Kirin 990 or newer—it doesn’t exist. fastboot reader huawei honor
The Fastboot Reader tool expects older fastboot syntax. Solution: Use Platform Tools version 28.0.1 or older. New Fastboot versions removed some OEM commands. The term is not an official Google or Huawei application
Kirin 655, 658, 659, 960, 970 (Honor 8X, Huawei P20 Lite, etc.) 970 (Honor 8X