All menu functions work correctly, including RAW. Autoloading does not work, in any way. Every time me have to do a firmware upgrade. Is this so conceived in a test build?
Your SD card must be properly configured!
1. Remove the SD card from the camera
2. Reformat the SD card as FAT32, using the card reader and your PC
3. Copy the required CHDK content to the card
4. Load the CHDK using the firmware update method
5. Go to: Miscellaneous stuff >> SD card >> Make card bootable
6. Remove the SD card from the camera, move the slider on the card to the "LOCKED" position, insert it into your camera, and power up.
Read more about preparing SD card here:
https://chdk.fandom.com/wiki/Prepare_your_SD_card