Port Status

driver	status	comments
LCD	90%	No inverse and other fancy stuff.
Backlight	100%	Working.
Buttons	100%	Working.
SD	90%	Basicaly works. DMA handling is suboptimal. Needs more testing.
NAND	10%	Low level driver part is reverse engineered. The work on reverse engineer FTL scheme is started.
PCM	100%	Working.
Codec	100%	Working.
ADC	100%	Working.
USB	90%	The driver is not yet merged see patch on gerrit. There are still some minor issues to be solved and more testing is needed
Power managment	90%	Battery readout & charge working but not calibrated.
USB DAC (602/603/801)	100%	Working
Coaxial DAC (801)	0%	Not tested

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Installation

Download original firmware (OF) and unpack archive:

HM-601: HM-601 V0.11

HM-602: HM-602 V0.11

HM-603: HM-603 V0.06, HM-603 V0.07

HM-801: HM-801 V0.21

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

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

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Installation using mkrk27boot

• Download mkrk27boot.
• Connect your device to PC via USB cable.
• Extract the rockbox build (rockbox-hifimanhm*.zip) on sd card of your device.
• Patch original firmware using mkrk27boot. Place patched firmware to internal storage of your device and BASE.RKW file to .rockbox folder on sd card.
  • ./mkrk27boot <path_to_orginal_firmware> <path_to_bootloader.rkw> <path_to_patched_firmware> <path_to_BASE.RKW>
    
    Example (Windows):
    mkrk27boot.exe HM-601.IMG bootloader.rkw E:\HM-601.IMG F:\.rockbox\BASE.RKW
    
    Example (Linux):
    ./mkrk27boot HM-601.IMG bootloader.rkw /mnt/flash/HM-601.IMG /mnt/sdcard/.rockbox/BASE.RKW

• Safely eject your device and reboot it.

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Alternative way

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 /mnt/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

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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