MyMPx.org - FW for Shamrock 2GB+FM AK1025 + Samsung 728 K9LAG08U0M-PCB0

I bought this unit in a non working condition. After trying to reset the unit (ak1025 pin 6) for 1000 times, the player came back to live two times!! That's were I was able to wrote down the firmware data:

Brand: Shamrock 1.8" (measured diagonaly) 2Gb with FM and recording
CPU: AK1025
FLASH: Samsung 728 - K9LAG08U0M PCB0
Display: KLM167E01-1A Cable: KFM167E01-1A
Board Nro: YSB16207V4-B
FW: 6207k9x_V.3.4
Date: 2007/04/03
Core: 9.0.50
Date: 2006/01/11

WAIT FOR THE PHOTO =>>
http://www.tec-sistemas.com.ar/c650/Shamrock_2G_FM.JPG

http://www.tec-sistemas.com.ar/c650/Shamrock_2G_FM.JPG

But after powering the unit OFF, the player starts allways stucked with a "loading" message...
So I decided to stamp a new firmware to the unit, but I still can't recover it. (By the way, I was unsucesfull on triyng to backup the existing one..)
Have no problem with the flash, I'm able to access it, have formated it twice under fat and fat32, place some songs, etc. Also can access the device as an ADFU 2.0 device!

All this firmwares have been stamped, but none of them have worked!!

With this only one, the display flashes twice, the remains off, and I'm able to use the the unit as a pen drive.
==>> "bks25002-kv2 AK1025 TGS177SH00 2LSD_ATJ2091N_18V_A1_NT39102.rar"

V5800_9.1.52.bin.7z
T518 MAIN PCB V3 128160B2G-1 FP-2.rar
SW-T518_YSB16207_V3.0.rar
QY-135-Y80033 1.91TFT 9.1.52.rar
LSD_9316_0_2006-12-31_9.0.50.rar
G-TGS177SHOOS1221IPOD.rar
Full Version 9.0.50.rar
Firmware_mp4_F20_NE_2G_2008-01J.rar
Firmware_bksc03106_10 2007-11-13_9[1].1.52 _2005-01-09.rar
ak1025 V9 - QY-135-Y80033 1.91TFT 9.1.52.rar
ATJ2091N_SAMSUNG728_K9G8G08U0M_PCB0.zip

A couple of this list abnormaly ends with a "different protocol" or "protocol error" message???

With this one, the program said "Unable to write/read boot record"
Unplug and plug again"
==>firmware_original_mp4_8GB.zip

To flash the chipod I'm using "Mp3 Player Upgrade Tool" from "Player Utilities V4.09" that came with the mini cd rom

ANY HELP WOULD BE APPRECIATED !!
GREAT SITE!!!