My PIP can’t print anything at all. And I can’t downgrade the firmware.
The "filament out’ sensor has been inoperative for months. But don’t worry there is one coming January 29, they say.
I had been printing happily without a good filament sensor before the upgrade.
The last two upgrades turned my PIP into a BRICK.
You should be able to downgrade using the Bambu Handy App. Within the title bar, there’s a Hamburger Button (2nd from the right).
Within that menu you will find the “Firmware Version” submenu. If you scroll down to the bottom, there’ll be a button called “I want to downgrade to a previous version”, where you can select a previous firmware version (01.04.02.00).
After downgrading, the printer will still prompt for a firmware update after each reboot. Just cancel it then.
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No, they don’t allow that.
They do on the P series printers.
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I just checked and also have no problems downgrading.
What version are you running at the moment?
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I see Bambu allow downgrade right back to the early releases on my A1 . This is really good and able to be done from the app. I know all users are not, like us, able to compile OS kernels and flash usb boot devices to re-flash klipper instances so this actually beats apple, as they dont allow this 
My A1 today, after upgrade, has the new PA ams lite saving features for auto-cal, but, i’m having some strange quality issues and the printer feels a bit faster and slightly more juddery.
Seems to be printing (well accelerating and decelerating) a bit quicker this side of the fw update anyone else notice this. I did the same batch of stuff as I did yesterday and today after the update and there’s a noise (slight more clattery) increase . Havn’t moved it or changed anything else same filament.
Anyone else has noted similar changes after the firmware update? Could mean new problems are on their way, and needs to be tackled fast.
I just updated to the newest 1.07 firmware on my P1P and ran a calibration. Now I’m getting the error that the resonance frequency of the X axis is low.
I’ve ran through the steps of cleaning the carbon rods and tensioning the belts but the error still occurs. I’ve read that this happened sometime last year to a lot of people but it was a software bug with a firmware update. Could this possibly be the case again?
I’m going to downgrade the firmware back to 1.06.01.02 to see if the error goes away.
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Thank you! This really helped. Not sure what happened with the latest update, but now the first layer is trash! I will try this to see if it is the firmware, or if something worse is going on.
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After upgrading to 1.0.7, I was having first layer problems as well as seams and stringing that had never happened before. Downgraded to 1.06.01.02 and all is working great again.
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I’ve just noticed my bottom layer 3, when it moves to fill in the last bit of solid infill it’s like that single last line is double thick. Did’t happen on layer 1 and 2. Almost looks like some sort of rounding issue with flow i’m using classic wall gen. This, of course finds its way up to the top layer. PLA settings all the same and no over extrusion i’ve checked 0.42 walls are bang on 0.42 and a benchy is crisp.
The latest firmware update somehow made the p1s camera even worse. im impressed.
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HELP !!! I upgraded to the newest firmware update for the P1S and have a Force sensor error.
Bambu sent me a cable and I changed the Force Sensor #3 but still the same issue.
I think it all has to do with the firmware update I just did.
Boy what a mistake
Everything was running just fine now this
Can someone tell me where I can find the firmware before 01.07.00.00
Also does anyone recommend changing to “LAN only mode”
I’m assuming going LAN only mode is still WIFI ???
Thank everyone for all of this great information and help
Cheers
Here’s how to downgrade the firmware from the app:
About LAN only mode, yes it will be over your wifi. It works but you will lose some small conveniences. You won’t be able to use the app anymore but you can use Studio from a PC. Printing from your print history won’t be there anymore. For me I never could get it to work with Windows Firewall, but that might be user error.
Have you tried a factory reset yet? Sometimes that fixes the weirdest of problems.
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Wow you guys are great. Quick response
To PrinterMcgee
I looked at my BH account and cant seem to find the location
Amd YES i did a factory reset
I can and will do it again
I did the search for the firmware on the printer and it only shows the current verision
No other verision show
Im wondering if I updated tje firmware without going step by step with each firmware updates ???
I installed another sensor on the front lwft side
Started to printed again snd it errorwd out again
Question: where can i get older firmware back to 01.06.00.00
Resaon why im asking for this firmware release is i was out of tje country for 2 1/2 month’s
I have looked everywhere cant file the file
Also All Bambu shows is tje latest verision.
Looks like they dont want us to go back
Any help is greatly appreciated
Cheers jeh1950
Hey Topgear11tc
You stated you had issues with this new firmware update.
I have as well.
BUT i looked in the firmware file on my P1S and there does NOT seem to be any older firmware versions
Im assuming you looked back and you could downgrade to the older very version
I have spent all day searching for anybolder versions but nothing out there.
I was wondering if you downgraded you should have the older version on you printer
Could you download it and email to me ???
I know im asking a lot but now i have this big gray brick sitiing there with nothing to do…
Appreciate it very much for any help you can provide
Cheers jeh1950 / john hamilton
I think maybe you have confused Bambu Studio with the Bambu Handy app.
The HANDY app on your phone is where you go to revert back and downgrade to an earlier firmware. You cannot do this from Studio on your PC.
All available firmware for each printer series is available from the Handy App and will be listed for each of your devices.
The printer MUST be set to cloud mode as well, and re-bound to your account if it is currently in LAN mode, to downgrade any firmware.
You cannot downgrade the firmware in LAN Mode.
The new firmware would not let me use my Orca Slicer. I had no problem rolling back my firmware with the Bambu Handy app as you described. Thanks! I am going to put off adopting the new firmware until I have to.
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