Please tell us some basic information before asking for help: Model Name: Firmware Version: Rooted or not: Frequency of Occurrence: APP Name & APP Version (If your issue relates to the app): In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc. ========================================
It is recommended that you first update it to a10 and then to a11 instead of directly jumping to a11. Reason? idk either, just read few folks and mod talking about it.
Update your system to the last A9 firmware version -> Update to A10 -> Update to the last A10 firmware -> Update to A11. All the necessary firmware packages can be found on the ROG Phone II support website.