How do I extract firmware from my player
 

I've an mp4 player from which I'm unable to extract the firmware.
Ive tried with with bothe s1fwx and s1res (v41 and v33 respectively)
With s1res if I try in ADFU mode I get invalid data wheras if I try in GIVEIO mode I get semafore timeout.

How can I go about extracting the firmware on it ?

Here are the player's hardware details:
Fiemware version displayed by in setup menu:
Core: CTW500_0.48
Date: 2006-04-25
FW: SRX-1.8T-052
Date: 2006-12-07


Board Version:
SRX - T28 - 25MAIN
VO.1
2008-11-26


OnBoard Identified Devices:
MCU: AK2025
FLASH: 2 x Samsung K9HCG08U1M PCB0
FM: RD2008