@DjDemonD:

I'm getting the same error on my corexy.

M122 - https://1drv.ms/t/s!Apv79JfGbPIwg5QsmYhl9eYy6yVTZg

when I try to downgrade to 1.21 rc2 I get

M997 S0
Error: M997: Firmware binary "Duet2CombinedFirmware.bin" not found

I managed to restore RC2 after hitting erase and flashing it using SAM-BA.
Working normally now, but still using wifiserver rc3, DWC rc3

Maybe try renaming the old firmware that you are trying to downgrade to "Duet2CombinedFirmware.bin". The newer versions look for that file name, the same way you had to rename the Duet2CombinedFirmware.bin to DuetWiFiFirmware.bin when upgrading the first time.

I think that I might have found a bug.
When doing the command
G1 X4 Y4 F200 S2;
only the X-axis moves

I am using this in my homeall.g

Here is my old homeall.g with added S2 does not work

[[language]]
G91				               ; Relative Positioning
G1 Z5 F6000 S2			; Lower Z
G1 X4 Y4 F600 S2             	; move away from the endstops
G1 S1 X-305 Y-305 F3000   	; course home X or Y
G1 S1 X-305               	        ; course home X
G1 S1 Y-305               	        ; course home Y
G1 X4 Y4 F600 S2             	; move away from the endstops
G1 S1 X-10                	        ; fine home X
G1 S1 Y-10                	        ; fine home Y
G90				                ; Absolute positioning
G1 X8 Y30 F5000 S2		; Move to first probe point
T0 				                ; select tool	
M280 P3 S160 I1			; release Z probe alarm
G1 Z5 F200 S2 			; lower bed
G4 P500 			                ; wait for the bed to lower
M401				        ; deploy the probe
G30 				                ; calibrate Z-axis
M402				        ; Retract Probe
G1 x0 y0 F5000			; Move to 0,0
G1 Z0 F200			        ; Move to Z 0

I have been building an enclosure for the panel due and have it up at https://www.thingiverse.com/thing:2690732. I would like to make this project universal for multiple builds. If you have a system that needs a different mounting bracket please let me know.

the whole fly back diode is confusing to me. I am using this relay http://modtronix.com/mod-rly2-5v.html and on that page it looks like the schematic has a diode. I have a 1N4001 diode on hand do i want to add it. If so where.

Thank you for all the help. I appreciate the level of support you provide. I will do my best to contribute back to the form when I can.

when lifting the old mosfet the pad came with

Ok I replaced the one for tr1 and tr9 tested and working. But i lost one of the pads when removing the tr5(the first one i did). The pad i lost was the pin2 or the source. Where can i connect it too. Please save me. Oh, i also removed the vssa fuse, my auto resetting one should arrive tomorrow. It i put it where the original on was, can i stil connect the resistor on the back.

Ok I replaced the one for tr1 and tr9 tested and working. But i lost one of the pads when removing the tr5(the first one i did). The pad i lost was the pin2 or the source. Where can i connect it too. Please save me. Oh, i also removed the vssa fuse, my auto resetting one should arive tomorrow. It i put it where the original on was, can i stil connect the resistor on the back.

Thank you, 507-1797-1-ND is a 0ZCJ0020FF2E, so that is the plan.

hmm so maybe the power supply is ok. It must have been the hot-end hitting bed clip. I found other post saying the same thing.