After powering on the printer, the touch screen starts getting stuck at ELEGOO logo and cannot enter into the main interface.

The firmware is crashed.
One of the components has a short circuit.
A FAT32 USB flash drive with the capacity under 16GB
A 2.0 mm Allen key
Format the USB flash drive in Windows
Click USB DRIVE - Format - Start.

Format the USB flash drive macOS
Click USB drive - Erase - MS-DOS(FAT 32) or MS-DOS(FAT) - Erase.

Click the link to download the fixing firmware.
Unzip the compressed package of the fixing firmware. Copy the fixing firmware (ChituUpgrade.bin) to the root directory of the USB flash drive.
Note: The directory which you accessed by double-clicking the USB flash drive is the root directory.

Insert the USB flash drive into the printer and restart the printer. The printer updates the fixing firmware automatically.
If printer's motherboard contains capacitors, please update the firmware to the version below.
Saturn 4 Ultra 16K Firmware
How to Update Firmware

If printer's motherboard does not contain capacitors, please update the firmware via the touchscreen OTA
Turn the power switch OFF (symbol "〇").

Unplug the power adapter cable.

Release and remove the seven screws shown in the picture below.

Reserve the touch screen ribbon cable and unplug the marked cables. Insert the power adapter cable into the motherboard port and turn the power switch ON (symbol "|").

Saturn 4 Ultra 16K Firmware
How to Update Firmware
