Orca Slicer Suddenly Cannot Map AMS units

After the last AMS firmware update, Orca Slicer suddenly popped the dreaded AMS mapping error every time I tried to print from it.

Bambu Studio can map the AMS but has trouble recognizing what Bambu filament is in one or two of the AMS slots. Almost always, it’s the AMS slot B3. But often, a random slot in the A unit will fail to know what the Bambu brand filament is.

Does anyone know how I can I resolve these two difficulties?

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Hi,

I had the same problem. It’s due to the latest firmware update.

I went back to 1.07.00.00 and that resolved the problem.

Roll back is done with the Bambu Handy app.

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The bug is reported here : P1S with AMS-Pro and AMS cannot print on FW 01.07.50.16 (Beta version) · Issue #9392 · SoftFever/OrcaSlicer · GitHub

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Thank you very much for giving me something to try. I tried to roll back and it didn’t help. I’ll just use Bambu Studio for now.

I tried the roll back as well and it made no difference. When I checked the printer it was still on the new version. Did yours actually roll back the firmware or just say it updated to the old version like mine did.

Here a screenshot

Screenshot_20250528_192715_Bambu Handy

I just got mine working by going back one more version to version 6 on the printer. That one took ok and everything is working again
.

When I checked it said it was on 1.07. I then enrolled in the beta program and updated. Orca slicer can now map my AMS, but now Bambu Studio still can’t always tell its own filament in the slots. At some times it can tell it is Bambu filament, but not the color. Since I am doing al ot of printing the fact the Device tab allows me to set the filament up it’s working close-enough. Annoying but no idea what else to try. It didn’t give me the option to go down to 1.06.

This is appalling. Why Bambu thinks it’s good business practice to antagonize and harm their customers with unwanted firmware restrictions is beyond me. When will they stop?