Riolist... I don't recall what firmware version you have, mine is 13.00.10.1012 and makd511 is.. .1015. Your version seems to be similar to mine. This means that some enhancement have been made between both version, ie. "file navi" that I don't have.
I am waiting for a couple firmwares promised by the seller confirmed to be in the provider premises. I will publish them here... and I will inform you about how the upgrade procedure goes which is for me a doubt.
The problem with cheaper chips is that are installed in player made by cheap enterprises that don't bring support, so we are relaying on Ainol which seems to be most known brand of ATJ2135 makers.
Yesterday I was interchanging e-mails with an executive of MEElectronics, a very gentle person but he wasn't capable of obtain a firmware for their product.
MEElectronics
Anyway... I'm still happy with this player... I was comparing it in sound with my new iAudio D2 and surprisingly the sound with SRS activated was as good as D2.