unknown usb (peripheric)

[pintv]

hi everybody!

i' have a problem with my china mp3 player chip "ATJ2091N. when insert i show "unknnow usb"in device manager i had to update with "AdfuUpdate"
driver but i cant always unkonwn any solution du revive this dead mp3?
thanks adv

[pintv]

[Zulu007]

your mp3 is in ADFU mode thats why it is showing the UNKNOWN USB so better to try to usb the drivers from the latest MP3 PLAYER UPDATING TOOLs and if that will not work too then use the WINDOW 98 becasue it will ask for the driver and when yu give the ADFU driver it accept the mp3 as an ADFU (HS or FS) device and then you can install the firmware to it

[pintv]

thanks Zuli007 !
if i understand means i will tray MP3 player updating tools like last mP3 player utilities 3.68 if always same problem still going to try in win98 to update driver ???

[pintv]

thanks now with win 98 i can to update driver now is in afdupdate i going to recovery with original firmware
thanks alot

[pintv]

hi!
after many times traying under win98 its impossible to recovery beacause when i start mp3 utilité upgarde tool ask me firmware but after insert flash noting happned

[zrock]

pintv,the firmware you have chosen is not compatible for your player.You'll need to disassemble your player and post some infos here like BOARD ID,DISPLAY NUMBER & CHIP TYPE.

Have a look at here for the hardware specs of a standard s1 player:

http://s1mp3.org/en/docs_hwspecs.php

[johjira]

I have the same problem.
My PC is window XP, I don't have win98. So, It means that I can not recover my MP4. It's dead? Anybody can help me?

[tcu212]

try this one johjira:

http://www.mympxplayer.org/dead-play...ide-vt567.html

[johjira]

tcu212,
as I informed I my PC show UNKNOWN USB in Adfu mode. So, I can not install any firmware. Anybody can help?