Current Digit Frontend 2.15, modules 2.6
Check in the settings menu what your current firmware is.
To update Digit, copy the firmware onto a USB flash drive and put that in pedal.
If you're upgrading for a version that starts with a 1, like 1.6.5 or 1.7 put all the packages in the "upgrade from 1" folder on a USB flash drive. If you're upgrading from 2.something copy the files in the "upgrade from 2" folder on to the USB flash drive.
Please watch the video:
Please remove old version from your flash drive before attempting to update.
The USB key must be formatted FAT32 (the default for USB keys) and have the files must be in the first partition (most USB keys only have one). Some USB flash drives don't work, if they have no partitions. All Sandisk USB flash drives tested work well.