I have been having a bunch of issues with my SonicPad recently, not the least of which was the inability to update the firmware through any method!!! Finally I was forced to go with "the nuclear option", but it did fix all the strange issues I was having!!!! Hopefully the same fix helps all of you.

Useful Links:

Creality SonicPad Firmware GitHub page:
https://github.com/CrealityOfficial/C...

7-Zip Download Page (To unzip the multi-part firmware from the GitHub page):
https://7-zip.org/download.html

USB-A to USB-A Cable (Must use this cable to flash, USB-C to USB-A does not work)
https://amzn.to/3yYvMEI