Afther the recent updates, the printer started to print in mid air any file i try.
If i try to print one of default files it makes it with no problems.
I tried to calibrate it but it’s not working.
It worked fine before this and everything that i printed was perfect.
Anyone has any ideea?
After ANY update restart and recalibrate, firmware or software
Machine power cycle is also a good idea as well after an update.
I would add reset to factory settings after any firmware update to that list.
(You will lose any calibrations stored on the printer.)
I’m not sure how to do it. Can you give me more info?
Power down the printer by either turning off the power switch on the back or unplugging it. Wait ~30 seconds and then power the printer back up.
From the touch screen, home the print head, then tap the hex icon (bolt head), General tab, Restore factory settings, confirm.
You’ll be led through the setup screens, calibrate, etc., just as if it were a new printer.
Thank you guys. I will try it tomorrow and let you know. 
If anyone hasa other ideas fell free to add. Great community
Also, make sure the build plate type set in the slicer matches the build plate that you are using.
Did you ever find a solution to this , im having the same issue
Welcome to the forum.
Have you tried a factory reset as suggested by the post that is marked at the solution to the problem?
Yes i did the factory reset and re ran the calibrations afterward, during the calibrations the nozzle touched the plate as it usually does when running properly. I also noticed that i have the flow dynamic calibration and bed level check box on when sending the print but it is skipping these steps and going directly to printing like 5 mm above the plate
New here…my son got an A1 for Christmas. He’s trying to print a few models and they get about 60%+ created and then the printer starts printing in mid air above the extrusion. The PLA is new, but has a tendency to get caught in how it is wrapped around the spool. Any ideas on how to troubleshoot?
Remove the spool, find the spot where the filament is crossing under another wrap, pull it out and re-wrap. That crossing basically forms an overhand knot which gradually tightens as you print. In the future, never lose control of the filament end while handling a spool.
