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You are my heros gr5 and CarloK! Bricked my UM3 caused by an faulty patch by Bondtech for Bondtech QR feeder. Um3 looped at startup and never finished booting. File recovery-5.2.1120190503.img provided by CarloK brougt my UM3 back to life. After Wifi-Setup another update was done by Air. Everything fine now, also afterwards putty patch for Bondtech QR extruder Steps and speed.

Thank you very much! Tried exactly what you mentioned and, It's starting now 🙂

Hello Registered me for this "fatal error". Exactly same thing on my side. Till Cura 4.3.0 everything went fine. Since Cura 4.4.0 exactly same error messages like first post image and cura won't start and closes. My System similar to Post 1 Win10Pro 1809 I7-8700 CPU @3,2Ghz 16GB Ram Nvidea GeForce GTX 1060 3GB Newest Driver for Grafics Newest Phyton 3.8 - also reinstall of complete Phyton 3.5 did not fix the fatal error @admin @support Please have a look! regards Michael