AMS Failed to pull back filament code: 07008004105104

hi, i was trying to print something today, and spent 3 hours trying to fix my bambu lab P1S printer. The error code i got is 07008004105104, and i cant seem to crack the problem. here is the breakdown of what i did.

THINGS I DID
first, i cleared a clog in the nozzle, i performed a cold pull, and cleared it.
second, i cleared the ams clog, there was one in the ptfe tube of slot 4, and i removed it
third, i removed the clog in the ptfe tube of the same slot (4) but this time it was in the ams HUB, and after all of that it still wont load.
i checked all the tubes, nothing else, nothing looking abnormal in the tubes all throughout the printer too. it wont even load the 1st filament slot.

i did all of these things, and it still wont let me print. i cant figure it out, i need help.

something to note is i have not updated firmware because last time i did that it didnt let me print either, and i had to downgrade. this was maybe 2 months ago? now im trying to print again and it wont work. thanks.

-Rafa

Very hard to suggest something based on what you are experiencing. Kind of a guess on my part, something that happened to me. A piece of filament is in one of the sensors of the AMS. Push filament thru each tube untill it exits the AMS. If there is a small section of filament, alot of times when you push filament towards it, the tube will jam. If it jams, try pushing filament in the opposite direction. Help this helps.

okay ill give this a go thank you. will update tomorrow