Hi
pipa93,
I hope everything is safe and sound there. To avoid any misunderstanding in the conversation, please provide me further information in English.
1. Your current firmware version
Setting >System>About Phone>Software information>Build Number
2. Please tell me which version you're trying to update to.
3. Please try the upgrade guide below
#[Zenfone] How to update firmware on my phone?
https://www.asus.com/support/FAQ/1009748/#ROG Phone Firmware Spot
https://www.asus.com/Phone/ROG-Phone/HelpDesk_BIOS/To ensure successful update, if you're on Android 8 now, we suggest that you first update to WW-15.1630.1907.98, then WW-16.0410.1910.91, and at last WW-16.0420.1912.16.
If you still could not update, please provide the issue detail (steps, screenshot, error message..).