The following seems like it is a bit confusing and may not make sense to anyone other than myself. Basically if you have a Select Mini V2 or V1 that has the UI seen in the picture, don't update the firmware. If you received a Select Mini V1 or V2, black or white and the UI looks like the photo, do NOT update the firmware with any currently available firmware version. Some V1's & V2's, white or black do NOT use the same firmware as previous V1 & V2's.
If your Select Mini has Motion Controller version 31+ or higher pre-installed, do NOT use V1 Motion Controller firmware. There is not any firmware updates yet available for the Select Mini V2.
If your Select Mini has UI Controller version 106.2 or similar pre-installed, do NOT use V1 UI Controller firmware which is any versions 33 through 42.
Link to V1 firmware: http://firmware.mpselectmini.com
UPDATING THE FIRMWARE IS NOT SUPPORTED BY MONOPRICE
Do not update the firmware before completing a few prints.
Updating the firmware before using the printer introduces another variable to the troubleshooting session you may have to go through.
Note: If you have trouble updating, please format microSD card or use another microSD card and try again. Try a microSD card that is 4GB or less formatted with FAT. The printer can be picky at which cards it will update from so try a few cards.
This method takes a little more work but has a nearly 100% chance of working the first time.
(Same instructions as recovery mode)
(This method is not for updating the UI Controller firmware)
Please use command M115 to check version and model. If model incorrect, please type “M115 S1” to correct.
YouTube link: https://youtu.be/zAj9wqvPNfA - Updating motion controller firmware - A quick video showing the update process.