mp3 player nJOY

cypher · #1 (**permalink**) 11th Mar 2009, 8:41 am

hi there,
as anyone that enters here i have question too...i have this piece of crap called nJoy PMP-181.
due to a bad firmware it was dead but now is resurrected (thanks for the manual). i have no back-ups, nu dumps, nothing. first update was to firmware 9.1.52 (it seems that this is the only one that works and the mp3 is seen in computer as 2 usb drives). while i was using s1res, i cut off the usb connection. now the mp3 player is not seen anymore in computer and the display is white (as in the picture).
below is what i've noted from s1res:
Flash type: F285
File ID: 0x0FF0AA55
Vendor ID: 0x010D6
Product ID: 0x1101
Versiob: 9.1.52
Date: 12/28.2006
Info: SDK-ITEM/ACTIONS Gongee.ZH
Manufacturer: Wilson Co Ltd
Device name: S1 MP3 player
Brom version: 3.0.8.0
USB rev: 1.00
MTP info: Actions MTP Dev 000001
MTP version: V1.003333
Serial number: A00000600001
Those data was collected after resurrection not before. i've tried to shortcut the memory and processor pins but it not worked.
So now, i need if there exist, an original firmware and also i wanna know how can i revive again the mp3 player. another data physical this time:
on board: XLX1013V4-K2
Memory: Hynix HY27UU08AG5M
Processor: ACU7515 GA094FA 5AH
Battery: Li-Ion: 042030/3.7V/180mAh/4.2V.
thanks a lot.

lolita · #2 (**permalink**) 12th Mar 2009, 1:15 am

Short-circuit the DATA PINS on the NAND flash while turning on the player by connecting via USB. If you do it correctly it will show up as ADFU device. Then you can upload the firmware that you originally used to make it work.

cypher · #3 (**permalink**) 12th Mar 2009, 6:35 am

since i did'nt know what was the original fw, i used the last one 9.1.52. this one bringed the p3 back to life but with that white screen. now, as i said (my mistake by removing the usb cable while using s1res) even if i shortcut the data pins, the computer dose not recognize the mp3 nor as usb device nor as adfu. the screen is white from the moment i connect to usb port. if i try to turn on the mp3 from the botton (without the usb connection) it stays light up until i release the power btn. the screen is still white, no hour glasses, no blue color no nothing.

lolita · #4 (**permalink**) 12th Mar 2009, 11:23 pm

You'll need to find the part# of the display.

cypher · #5 (**permalink**) 13th Mar 2009, 12:23 am

after a full dissmantle (hard...a lot of glue between display and pcb), i have (i think) the lcd pn: FPC-0089A2. i'll search on s1mp3. if you know or have something about this pn, it will be great.
thanx a lot.

lolita · #6 (**permalink**) 13th Mar 2009, 1:50 am

FPC = flexible printed circuit

http://www.electronics-manufacturers...rcuit-fpc.html

Searching your part number reveals that JINBANG8201 hardware also uses this same number on its FPC; however, having the same piece connecting the display to the main board does not necessarily mean the display has the same controller. You're welcome to try that firmware though.

The part number should be on the frame or the back of the LCM, like this GXBL177:
http://img14.imageshack.us/img14/4336/dsc0387rmy.jpg

cypher · #7 (**permalink**) 13th Mar 2009, 2:25 am

unfortunatelly there is nothing written ...neither on backside, neither on laterals.
i'll try with jinbag's fw...those that have an 1.8 (i presume that is the display) on the title.