Firmware 01.09.01.00 downgraded AMS to 00.00.06.75

Bambu Lab X1 Series Bambu Lab X1C
1

I performed the firmware upgrade today on my X1C with AMS to .01.09.01.00 and now my AMS firmware version dropped down to 00.00.06.75. I did not catch this at first once the firmware update was complete so I did not note the version prior to the upgrade, but I know it was updated to the latest version 2 weeks ago. I only noticed the change when I went to edit my filament information and unable to see my custom filaments, only the pre-loaded, so I know it dropped to a version that did not support custom filaments.

I cannot identify how to upgrade the firmware version of the just the AMS, so do I need to downgrade my X1C firmware and then try the upgrade again?

Thanks.

20250611_141839
20250611_1418391920×2560 160 KB

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2

Welcome to the forum.

I just had this firmware pushed to one of my printers.

PXL_20250611_185614912~2
PXL_20250611_185614912~21920×1261 116 KB

You should be able to roll the firmware back with the Handy app.

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Thanks JonRaymond! I did not know the Handy app had that functionality. I have only used it for monitoring print jobs remotely. The downgrade was a success. It does beg the question, why the new firmware wants to downgrade the AMS.
Thank you again!
Jim

4

I had assumed that the issue was was a typo in the firmware numbering but it seems you found that they are actully using a very early version?

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Did your custom filament profiles come back? I think I read in a thread that they maybe stored in the BL cloud but not sure.

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I would have suspected typo also but it is weird. No updates on the version history page but don’t know when it was last updated.

Edit guess it was update recently since the printer firmware is dated 20250611
but the last AMS FW is still AMS version 00.01.06.62 (20250429)

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off the wall thought, what is the AMS2 firmware at? I don’t own one. Does it run the same as the AMS?

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I’m pretty sure that the current AMS 2 firmware version is 02.00.19.68

Listing out the AMS 1 firmware releases it seems that the 1 may be out of place and they have reverted back to the 00.00 precursor.

00.00.06.75 (current)
00.01.06.62 (20250429)
00.00.06.44 (20240722)
00.00.06.40 (20230921)
00.00.06.32 (20230420)

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I was able to get my custom filament profiles back when I reverted but I also found out, that the printing hot end was swapped out from .4 to a .2 and updated on the printer, prior to me doing the firmware update. The printer is used by a couple of us, but information had not been shared. So after the downgrade, I was unable to get my profile back when I changed the nozzle setting back to .4, from .2 Since this was the first time the nozzle had been swapped we were unaware that profiles had to be created specifically for a nozzle size. So this may have been the real culprit of my issue and I am thinking that the AMS firmware might be as JonRaymond mentioned, reverted back to the 00.00 precursor and it is an updated version and not an older one. Now that I have created a .2 profile for some of my custom filaments, I am thinking of upgrading to see if the custom profiles are available on the AMS exist under each nozzle size, after I print the jobs that were held up earlier. I greatly appreciate your responses and insight on this matter.

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10

Good catch, I didn’t notice that when I scrolled down on the wiki

11

OK. Sounds like a successful test of downgrading the AMS firmware. :stuck_out_tongue_winking_eye:

12

Always good if you learn something from a mistake or an error. :flushed:

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I have just completed this upgrade/downgrade, or whatever I can call it.
00.01.06.62 (20250429) → 00.00.06.75 (current)

Has anyone seen any official note from Bambulab on the version numbering?
Has anyone seen any official release note from Bambulab on what features/fixes are included in the version 00.00.06.75?

If you have please share it here, for everyone to see.

thanks

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