I received one a few days ago and installed Rockbox on it, but there have been a few issues that make me return to stock firmware.
The first issue is that the theme is all messed up.
Clearing the backdrop fixes this in the menus, but not on the Now Playing screen. It's not a huge issue, as it's still usable and I can also change themes.
The second issue is the bigger problem. When playing some songs, the sound is all messed up. Sometimes there is a ton of static/crackling. And other times a different song is being played, sped up, and with the static/crackling. Even when listening to one album, some songs will play fine and some will have this issue.
One thing to note is that the HM-601LE supposedly uses the HM-602 firmware, so that's the firmware that I've been modifying. I did speak to someone over at Head-Fi who says he Rockboxed his 601LE with the modded HM-602 firmware, but he doesn't have the sound issue that I'm encountering.
Does anyone know what might be wrong?