This may not be related to the firmware but rather to a cooling issue with the control unit. The SoC chip is behind the LCD and only has a very shallow heat sink installed. That is then pointed down at the mount plate with less than 3mm of space for airflow. I’ve also started seeing these Klipper halt messages and I’ve just installed a fresh-from-Sovol EMMC card.
See Is the SV07 Mainboard undercooled?
Tim