How to upgrade the touchscreen firmware?
Wait for 30s - 1min, the touchscreen will reboot after upgrading completed.
❗Warning: Do not power off the touchscreen during upgrading!
After upgrading, click
Settings -> About to make sure the firmware has been upgraded to the newest version.❗If the upgrade failed or the screen goes black, follow this instruction to fix it - https://manual.rotrics.com/troubleshooting/troubleshooting-accessories#1-how-to-fix-a-black-screen-after-upgrading-the-firmware