s1fw.com has a great collection of MP3/MP4 player firmwares to download and use to recover your player.
Here are some steps to show you how to download firmware files from s1fw.com.
Firstly, go to s1fw.com and fine the firmware you want to download.
One that page, there is a section called "Fw Page
Click on "Address
" link like the image below:
One the next page that comes up, click on the "Download Address
" link to download the firmware like the image below: