If you are using a newer version of the tool (sometimes labeled as v7.7 or similar in patches):
Re-solder or re-clip the flash chip back to the PCB (if you desoldered it). Mount the PCB on the drive, power up, and check if the drive spins and is detected.
To perform a hardware flash, the phone must be in .
Unlike standard free tools, the MRT HW Flash Tool generally requires an MRT Dongle