When downgrading from O2 2.1 to O2 1.6, it failed to boot up and stucked at the Dell logo. Tried to use QDL to recovery, tried to use the ADB driver coming from the QDL tools, but stucked at "Wait for ADB device".
Any advice are welcome! Thank you!
Edited by Toney 2008, 19 January 2011 - 05:11 PM.