NW-S754 Bootloader not installed

[mea1cafep0peye]

I have NW-S754. (Not NWZ)

To use ROCKBOX I want to install Bootloader, but it doesn't work.

　　scsitool-nwz-v23.exe H: do_fw_upgrade

After installing using the command, firmware update Screen will be displayed,
but the original screen will be returned without completing the firmware installation.

Please tell me the possible measures.

[Chronon]

This isn't listed as a supported player.  Can you point me to what instructions you are following?

Is "H" really the mount point of the player?

[bff]

I have the same problem with NWZ-S764.

The information from https://www.rockbox.org/wiki/SonyNW:

For example the NW-E060/NW-S760/NW-A860/NWZ-S760/NWZ-A860 series all share the same hardware and the NWZ-A864/5/7 are in the NWZ-A860 family.

So I am using nwz-a860 bootloader (NW_WM_FW-nwza860-v1.UPG)

I also see the firmware update screen after running do_fw_upgrade command, but then system just reboots into OF.

[Chronon]

And what command did you enter to install the bootloader?

Did you also install the Rockbox firmware?