https://www.rockbox.org

I figured as much -- that's why I want it.. I'd like to check it to see what's wrong with it.

Are you able to provide me your bootloader backup? It's called shanlingq1-boot.bin, you should have created it when installing rockbox.

illegalval on the rockbox forums gave an RB bootloader backup from a v2.2 device to somebody who was having the same problem as you, and restoring from that apparently fixed the problem. I asked for illegalval's backup on the RB forums so I can hopefully get to the bottom of this and fix...

You provided the M0 kernel sources, which was mildly helpful, but I still had to disassemble & decompile the real Q1 kernel after dumping it from onboard flash because of all the differences between the players. I know you said you simply provided what your engineers tell you is correct, but...

Due to recent improvements in the Rockbox bootloader I could probably add a graphical dual boot menu now (m3k rockbox dev here). I'll look into that this weekend, maybe. Not to toot my own horn here, but Rockbox on the M3K is really stable nowadays. There's no serious issues that I know of, and...

Besides eventually adding Bluetooth support, I don't have any specific features in mind that are only possible under Linux - Rockbox already runs on the Q1 (just not under a Linux kernel) and serves my needs pretty well. Shanling's firmware is actually pretty good - before I had a Q1, I used the...

There's a thread on the Rockbox forums and mostly complete build instructions on my github repo. The only thing that's missing from the build instructions is how to build the bootloader: you need to clone the Rockbox repo and apply this patch manually (if you've not used Gerrit before, click the...

I'm the developer of the Rockbox port to the Q1. Just would like to say, in case you're interested, I'm working on porting Linux to the Q1. It isn't very exciting right now - no graphics and no audio yet - but the most difficult parts are already done. Running Rockbox on top of Linux can enable...