Thank you for your asking. Kindly provide the information below so that we can better assist you.
1. Your current firmware version
Settings>System>About Phone>Software information>Build Number
2. Which firmware do you want to update? If you want to OTA to Android 10beta, please update your Android 9 to the latest version first, then perform the manual update to Android 9.
Comments
Hi adityachaurasiya905
Thank you for your asking. Kindly provide the information below so that we can better assist you.
1. Your current firmware version
Settings>System>About Phone>Software information>Build Number
2. Which firmware do you want to update? If you want to OTA to Android 10beta, please update your Android 9 to the latest version first, then perform the manual update to Android 9.
#Update Guide
https://www.asus.com/support/FAQ/1009748/