Hello!
I just bought a mp3 player 2Gb with ATJ2091N 9.0.50 (colortext)!
I want to extract the firmware.
I have a same dead mp3 player and I want to use the firmware from the new player!

I use "s1fwx_v31" for the extract and the MP3 Player Utilities 3.68 (upgrade tool) for the upgrade.
Unfortunately, the upgrade tool says that "the firmware file is invalid".
I think that the "s1fwx_v31" doesn't extract the full firmware file from the mp3 player.

How can I extract the correct firmware from ATJ2091N 9.0.50?

If I download the correct full firmware from the mp3, after that I can to give to you...

Thank You

You can't extract/repair/flash any firmware from 9.0.48 and up because the program for it needs an update before it can work with those firmwares. You have to wait for that.

oh! I didn't know that.
So, I'll waiting for an update of the extract tool...

Thanks