Release Candidate Firmware V3.0 RC5

[recliq]

what's the best way to troubleshoot or provide more info for an "UPDATE FAILED" message for the Video expander? I've tried a few different (confirmed empty) sd cards with the expander and have been careful plugging in the ribbons on the back but haven't been able to get past the error.

I also noticed before this that trying to change any settings on on video expander couldn't save and would result in a "Fail" message.

Both cables, the 14 pin and the 12pin must be inserted properly from the VEX to the NerdSEQ.
Maybe the 14 pin cable is not good anymore? Surely try both slots (and never ever hotplug as that can kill things)
Also the video expander must be working already, the original firmware should be on the VEX SD Card (not sure if you copied everything).
Other things to consider: power supply and worst case a hardware issue with either the VEX or the NerdSEQ.
I assume a USB Keyboard is also not working then?

I am trying to isolate some variables today, trying different cables and removing all other expanders. One thing I can't find is "the original firmware must be on the vex SD card" is there a place I can source the original vex firmware? I cannot find it

Have a look here:
https://forum.xor.eu/showthread.php?tid=...3#pid10803