# Calibration failure M4.1 V0.88 **URL:** \ **Category:** Troubleshooting\ **Created:** [March 7, 2025, 10:44am UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512 "2025-03-07T10:44:53Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Gabba74](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@Gabba74](https://forums.maslowcnc.com/u/Gabba74)\ **Post date:** [March 7, 2025, 10:44am UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512/1 "2025-03-07T10:44:53Z")
Hi Bar, I´m trying to calibrate my updated Maslow 4.1. I installed firmware V0.88 but it seems that the calibration process is stalling, it keeps computing or reading fitness points but I get a repeated warning about the value’s being to low. See logfile In the attachment and screenshot of config What am I doing wrong? Appreciate the help! ![Scherm­afbeelding 2025-03-07 om 11.40.23](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/8/b/8b34fd69c1eb8e42e4858af6000f19acee4f8739.png) [Maslow-serial-3.log](https://forums.maslowcnc.com/uploads/short-url/kDl9y1shURCWF4pHc4kXBxHwM9i.log) (109.5 KB) ![IMG_2832](https://canada1.discourse-cdn.com/flex031/uploads/maslowcnc/original/3X/a/2/a2bd83f87948c89570f617ea09780a1de2516abf.jpeg) ---
**Author:** ![MrN808](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/mrn808/32/22275_2.png) [@MrN808](https://forums.maslowcnc.com/u/MrN808)\ **Post date:** [March 7, 2025, 5:41pm UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512/2 "2025-03-07T17:41:21Z")
Aloha, that’s how the new calibration process works; I was quite sure something was wrong when my new calibration exhibited that behavior. When I restarted and just let it run, it eventually found solutions at every calculation point that were more than satisfactory. Mahalo, ---
**Author:** ![bar](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bar/32/10_2.png) [@bar](https://forums.maslowcnc.com/u/bar)\ **Post date:** [March 7, 2025, 8:25pm UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512/3 "2025-03-07T20:25:32Z")
@MrN808 is right that the new calibration process will retry several time to get a good answer, but from looking at your log I’m seeing that it’s never finding a good answer. Some folks have reported that uploading a new Maslow.yaml file has fixed weird issues with the new system for them, can you give that a try? I’d recommend downloading your old one first so you have a backup just in case you want it back. ---
**Author:** ![Gabba74](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@Gabba74](https://forums.maslowcnc.com/u/Gabba74)\ **Post date:** [March 7, 2025, 8:33pm UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512/4 "2025-03-07T20:33:20Z")
Thanks for your replies! @ Bar I’ll try replacing the yaml file. ---
**Author:** ![Gabba74](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@Gabba74](https://forums.maslowcnc.com/u/Gabba74)\ **Post date:** [March 8, 2025, 4:52am UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512/5 "2025-03-08T04:52:48Z")
By the way, the Maslow stops moving after 4 or 5 point ( of the 9x9 grid). I killed the power after approximately 10 min … ---
**Author:** ![Gabba74](https://avatars.discourse-cdn.com/v4/letter/g/b19c9b/32.png) [@Gabba74](https://forums.maslowcnc.com/u/Gabba74)\ **Post date:** [March 12, 2025, 2:41pm UTC](https://forums.maslowcnc.com/t/calibration-failure-m4-1-v0-88/23512/6 "2025-03-12T14:41:47Z")
Uploading new yaml file worked! The Maslow fully calibrated. But I´m running into other problems, I will post in the right section…