ASUS Transformer Prime hard reset TF300T
Turn off Prime. Press and hold the Volume Down and Power buttons until you see message. Press the Vol UP button in less then 5 seconds. In recovery menu select wipe data Factory reset. Then restart/reboot tablet.
Soft reset ASUS Prime if frozen
Press the reset button to restart ASUS Prime.
If the system becomes unresponsive, press the reset button to force
the Eee Pad to restart.
Forcing the system to restart may result in data loss. Please
inspect your data to ensure there is no data loss. We strongly
recommend that important data be backed up regularly.
Eee Pad Transformer Prime TF201 Firmware: V22.214.171.124 Only for WW SKU (Android 4.0.3)
Warning ! Sku WW number must be the same! Download firmware from ASUS website.
Check Build number: Select Settings-->About tablet-->Build number