Should ANYTHING concern you or if you just have questions please do not hesitate to let me know and I will gladly help you in anyway I can. I can be reached via e-mail at catheroine@126.com or our QQ Group X75-22428329 CX75-24765104. We have many technical experts who can answer any of your questions.
P.S. My name is Catherine, Catheroine is my bbs ID.
You mean downgrade? What’s your S75’s FW version now?
You could apply the software x65flasher-1094 (either English or Chinese version is OK) with your back-up files if something goes wrong with your S75. Therefore, you should back up all your bootcore, EEPROM, Filesystem and Firmware before you do ANYTHING! (See the screen-shot pictures in #3).
The software x65flasher-1094 is very convenient for downgrade and upgrade in case that you have back-up Firmware files. If you have back-up files of FW 20, you could use x65flasher to downgrade to FW20.
See detailed information in #7.
Firstly, choose the right version of your back-up Firmware. (e.g. FW20)
Secondly, restore.
It’s not convenient for me to write in BBS because I’m in office now.
I could give you further information after my work if you’re still on line. (8:00-23:00 pm Beijing time)
It's a pity! I don't have non-Chinese version.
You could ask Watercool for help. He bought S75 before.
Perhaps he could give u some suggestions.
Please search the FTP of 0110 bbs, hope you'll get it.