Port Status

driver	status	comments
LCD	50%	Works in bypass mode. No dma transfers (so updates are sloooow), no inverse and other fancy stuff.
Backlight	100%	Working.
Buttons	90%	Not working hold button. Other buttons works fine.
SD	90%	Basicaly works. DMA handling is suboptimal. Needs more testing.
NAND	0%	Not implemented
PCM	100%	Working.
Codec	100%	Working.
ADC	100%	Working.
USB	5%	The USB core has some weird scheme of supporting control packets. Some requests seems to be handled purely in hardware which doesn't quite fit rockbox usbstack concept.
Power managment	90%	Battery readout & charge working but not calibrated.
USB DAC (602/603/801)	100%	Working
Coaxial DAC (801)	0%	Not tested

Installation

Download original firmware (OF) and unpack archive:

HM-601: HM-601 V0.10

HM-602: HM-602 V0.06

HM-603: HM-603 V0.05

HM-801: HM-801 V0.21

Download bootloader: HM-60x, HM-801.

Download rockbox build: HM-60x, HM-801.

Linux

• Extract the rockbox build (rockbox-hifimanhm*.zip) on sd card of your device.
• Create "img" directory and mount OF image file to it
  • mkdir -p /mnt/img
  • mount -o loop <model name>.IMG /mnt/img
• Copy BASE.RKW file from OF image to .rockbox folder on sd card
  • cp /mn/img/SYSTEM/BASE.RKW /mnt/sd/.rockbox/
• Replace BASE.RKW in OF with bootloader.rkw
  • cp bootloader.rkw /mnt/img/SYSTEM/BASE.RKW
  • cp bootloader.rkw /mnt/img/SYSTEM00/BASE.RKW
• Unmount OF image file
  • umount /mnt/img
• Put '*.IMG' file to internal storage of your device
• Reboot your device

Windows

• Extract the rockbox build (rockbox-hifimanhm*.zip) on sd card of your device.
• Download and install PowerISO. Free unregistered version would be enough. Or you can use any analagous program, which could edit image files with FAT filesystem.
• Open OF image file (HM-601.IMG, HM-801,... ) in PowerISO? program.
• Copy BASE.RKW file from SYSTEM folder in image to the .rockbox folder on sd card.
• Replace BASE.RKW in OF image with bootloader.rkw (Rename booloader.rkw to BASE.RKW and replace original BASE.RKW in SYSTEM and SYSTEM00 folders).
• Save changes and put derived IMG file into internal storage of your player.
• Reboot your player

Uninstallation

• Download original firmware (OF)
• Boot OF (turn on device by pressing POWER + any other button or by inserting USB cable)
• Unzip file to internal storage of your device
• Safely eject your player.
• Shutdown device
• Boot OF

-- AndrewRyabinin? - 10 Mar 2012