In order to get proper eMMC support we need to add the Sovol dtb file for this (the original 8GB eMMC to be exact, this one will not work unless we use this file). You can find the sun50i-h616-sovol-emmc.dtb in this folder. Please add this file on your eMMC (or SD card) BOOT partition in /dtb/allwinner/. Next make sure you have fdtfile=sun50i-h616-sovol-emmc in your BoardEnv.txt file. This will be done and explained in the guide at Step 3.
These scripts were added by Sovol for the Z_OFFSET_CALIBRATION (the [probe_pressure] and [z_offset_calibration] parts in the printer.cfg). Since the scripts by Sovol do not work anymore with the recent version of Klipper, changes have been made to fix this.
To install these addons you need to copy them (e.g. with an FTP client) to your '~/klipper/klippy/extras/' folder and restart Klipper. For more info see Step 5 in the guide and the readme in the /sovol-addons folder.
Here you will find the files that will go into your ~/printer_data/config folder on the printer. Please make sure you add the correct serials to your printer.cfg at the [mcu] and [mcu extra_mcu] entries. This will be done and explained in the guide at Step 8.
This is the exception! You can still find and download this script here: Automatic MCU update script