Can you use a riplock patch with H54N?

If so, with what firmware? IIRC, there hasn’t being any H54N firmwares released, so can I use another version’s?

Thanks in advance, help is immensly appreciated.

The H54 hardware is most probably identical with the H50/H55 hardware. I have heard of no crossflash attempt yet. Such a try could kill the drive.

then, where can I download a H50/H55 firmware? TDB seems not to have it.

The firmware flasher will refuse to flash a H54 drive with a H50 or H55 firmware.