I'm searchin' the firmware for this thing for almost 3 fu**n' days! And after all, i found threads that there was ppl which were searching firmware for this thing and they didn't found it!?
I opened my and here is the info!
Under the audio jack: ROADMAP RD... (rest i can't see cuz it's very small)
Main chip: CTW500N GA041HB 1A0
On the board behind the display MP-308W-TSLS Rev:2.0 Rohs
Second ,the big one ,chip: HYNiX K0R HY27UU08AG5A
(under)
TPCB 827HA
(under)
MTUJI287JQ
This is all i could see in him!
I tried allmost about 50-60 firmwares (all of 9.0.48-51) and some of 9.1.52. And, in that pile of firmwares with (maybe 2) some display worked ok (the busy sighn was on right place). But all could see is that busy sighn and nothin' more. And, with other firmware PC recognize it as a Removeable drive of 1.90 GB. I ask if someone could assist me and help to revive these players (have 2 of them). I found this one:
Download , And the player on the pic is almost indentical to mine. IT's THE SAME IN ANY VIEW! But, it doesn't work!? The Upgrading tool stuck in "download boot record" and then error windows pops up and it says "Invalid upgrading firmware file". I don't have any more ideas. Read somewhere that this CTW500 is almost same as ATJ2093 (with firmware for ATJ PC recognize my player as removable drive). So i thought that i can combine somehow two firmwares and make one stable for mine mp4? Please, any answer is appriciate!!
BTW The forum is awsome!!! Plenty of firmwares and stuff...
Update: This is what chip genius said:
Device Name: +Actions USB 2.0 (HS) WinUSB Device
PnP Device ID: VID = 10D6 PID = FF66
Serial Number: 5&&278A3C80&&0&&1
Revision: (Information not returned)
Device Type: Standard USB device - USB2.0 High-Speed
Chip Vendor: Actions
Chip Part-Number: AK1011
Product Vendor: (N/A)
Product Model: Recovery
Tools on Web: (N/A)
Ms mp403 1.8" 2gb
I think that i supply almost every info about my player. If u (or anybody else) need a more info, just say! 
