Lexmark CX310dn Error 959.03 Invalid Firmware 1060 pnssverify

[alsid]

Hello,
I have an issue with a Photocopier Lexmark CX310dn, I performed an upgrade and failed, after that it appears an error code 959.03 Invalid Firmware. I can't access to service mode only in USB Recovery Mode. I used USB Flash Utility to flash it but seems that it's not working on Windows 10. The device its not appeared on USBflash2.0. I tried on Windows 7 but when I put the device on Recovery Mode requires driver for Lexmark T64x AIO that I can't find. Is there any way how to flash the device using Recovery Mode method.
Any help will be appreciated.

Cheers!

[dalewb74]

worst case you can revert back to the older version of the firmware. to see if that helps. fairly easy process, if you know the process.

[alsid]

worst case you can revert back to the older version of the firmware. to see if that helps. fairly easy process, if you know the process.

Thank you for your reply. I found it somewhere in web but never tried. Something with 2 and 8 while turn on.
If you know how I can do it tell me cause I can't find it again.