I just want to report that when I flash the firmware again on both boards, everything seems normal now. I will update here again if I see anything out of order.

Just in case you need my M122:

m122 === Diagnostics === RepRapFirmware for Duet 3 MB6HC version 3.4.0rc2 (2022-02-22 17:04:17) running on Duet 3 MB6HC v1.01 or later (standalone mode) Board ID: 08DJM-956BA-NA3TJ-6JTDD-3SD6L-KA9UT Used output buffers: 1 of 40 (26 max) === RTOS === Static ram: 150984 Dynamic ram: 96080 of which 140 recycled Never used RAM 100468, free system stack 129 words Tasks: NETWORK(ready,23.9%,207) ETHERNET(notifyWait,0.2%,168) HEAT(notifyWait,0.0%,321) Move(notifyWait,0.0%,269) CanReceiv(notifyWait,0.0%,793) CanSender(notifyWait,0.0%,356) CanClock(delaying,0.0%,339) TMC(notifyWait,9.7%,58) MAIN(running,66.1%,925) IDLE(ready,0.0%,30), total 100.0% Owned mutexes: === Platform === Last reset 00:03:14 ago, cause: software Last software reset at 2022-03-10 10:17, reason: User, GCodes spinning, available RAM 103468, slot 2 Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x00400000 BFAR 0x00000000 SP 0x00000000 Task MAIN Freestk 0 n/a Error status: 0x00 Step timer max interval 138 MCU temperature: min 47.7, current 48.5, max 48.5 Supply voltage: min 24.0, current 24.1, max 24.1, under voltage events: 0, over voltage events: 0, power good: yes 12V rail voltage: min 12.0, current 12.1, max 12.1, under voltage events: 0 Heap OK, handles allocated/used 99/1, heap memory allocated/used/recyclable 2048/700/690, gc cycles 0 Events: 0 queued, 0 completed Driver 0: pos 384000, standstill, SG min 0, mspos 74, reads 40263, writes 15 timeouts 0 Driver 1: pos 0, standstill, SG min 0, mspos 808, reads 40263, writes 15 timeouts 0 Driver 2: pos 64000, standstill, SG min 0, mspos 568, reads 40263, writes 15 timeouts 0 Driver 3: pos 0, standstill, SG min 0, mspos 401, reads 40264, writes 15 timeouts 0 Driver 4: pos 0, standstill, SG min 0, mspos 618, reads 40276, writes 3 timeouts 0 Driver 5: pos 0, standstill, SG min 0, mspos 947, reads 40275, writes 3 timeouts 0 Date/time: 2022-03-10 10:20:51 Slowest loop: 11.28ms; fastest: 0.05ms === Storage === Free file entries: 10 SD card 0 detected, interface speed: 25.0MBytes/sec SD card longest read time 2.1ms, write time 0.0ms, max retries 0 === Move === DMs created 125, segments created 6, maxWait 81202ms, bed compensation in use: none, comp offset 0.000 === MainDDARing === Scheduled moves 91, completed 91, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === AuxDDARing === Scheduled moves 0, completed 0, hiccups 0, stepErrors 0, LaErrors 0, Underruns [0, 0, 0], CDDA state -1 === Heat === Bed heaters 0 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1, chamber heaters -1 -1 -1 -1, ordering errs 0 === GCodes === Segments left: 0 Movement lock held by null HTTP is idle in state(s) 0 Telnet is idle in state(s) 0 File is idle in state(s) 0 USB is idle in state(s) 0 Aux is idle in state(s) 0 Trigger is idle in state(s) 0 Queue is idle in state(s) 0 LCD is idle in state(s) 0 SBC is idle in state(s) 0 Daemon is idle in state(s) 0 Aux2 is idle in state(s) 0 Autopause is idle in state(s) 0 Code queue is empty === CAN === Messages queued 1227, received 3694, lost 0, boc 0 Longest wait 2ms for reply type 6013, peak Tx sync delay 18, free buffers 50 (min 49), ts 635/635/0 Tx timeouts 0,0,0,0,0,0 === Network === Slowest loop: 24.33ms; fastest: 0.02ms Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0), 0 sessions Telnet(0), 0 sessions HTTP sessions: 1 of 8 - Ethernet - State: active Error counts: 0 0 0 0 0 Socket states: 5 2 2 2 2 2 0 0

M122 B121

m122 b121 Diagnostics for board 121: Duet TOOL1LC rev 1.1 or later firmware version 3.4.0rc2 (2022-02-22 10:15:02) Bootloader ID: SAMC21 bootloader version 2.3 (2021-01-26b1) All averaging filters OK Never used RAM 2624, free system stack 62 words Tasks: Move(notifyWait,0.0%,153) HEAT(notifyWait,0.2%,115) CanAsync(notifyWait,0.0%,59) CanRecv(notifyWait,0.0%,76) CanClock(notifyWait,0.0%,65) ACCEL(notifyWait,0.0%,61) TMC(notifyWait,3.0%,57) MAIN(running,91.9%,335) IDLE(ready,0.0%,26) AIN(delaying,4.9%,142), total 100.0% Last reset 00:03:48 ago, cause: software Last software reset data not available Driver 0: pos 0, 800.0 steps/mm,standstill, SG min 6, read errors 0, write errors 1, ifcnt 232, reads 48769, writes 12, timeouts 0, DMA errors 0, CC errors 0, steps req 0 done 0 Moves scheduled 0, completed 0, in progress 0, hiccups 0, step errors 0, maxPrep 0, maxOverdue 0, maxInc 0, mcErrs 0, gcmErrs 0 Peak sync jitter 3/7, peak Rx sync delay 213, resyncs 0/0, no step interrupt scheduled VIN voltage: min 23.9, current 23.9, max 23.9 MCU temperature: min 43.7C, current 43.8C, max 44.2C Last sensors broadcast 0x00000002 found 1 172 ticks ago, 0 ordering errs, loop time 0 CAN messages queued 4723, send timeouts 0, received 2159, lost 0, free buffers 37, min 37, error reg 0 dup 0, oos 0/0/0/0, bm 0, wbm 0, rxMotionDelay 0 Accelerometer: LIS3DH, status: 00 I2C bus errors 0, naks 3, other errors 0