: Flashing the wrong firmware version can permanently disable the drive. Check NAND Compatibility : A common pairing is the YS9082HC with Intel N38A QLC Hynix 3dv6 TLC

Yeestor does not publish firmware publicly. You will find it in three places (ranked by safety):

by a Brazilian developer named Artur, who had modified the tool to bypass "CFG Errors" and "tamper" locks. This was the "best" firmware Elias could hope for—a community-sourced lifeline for a chip that many had already written off. He entered the Edit Config

Because SSD firmware is hardcoded to specific memory chips, there is no single "best" standalone file. The best tool is a designed for your specific controller and NAND combination. Core Hardware Specifications