Clean ext. SD upgrade from 7_04 original FW to 7_24 FW. No issues in reinstalling Hacks & Apps.UI, touchscreen much more snappier. I believe the inputs about faster CPU, testing the battery impact from this.Wi-Fi is reported to be buggy. Here is my experience.1> New Wi-Fi scan after reboot found my home AP w/o problem. Log in OK, but log in time no faster.2> Went to work, tried to scan for work AP but never found anything. Had to kill the process.3> Rebooted the PDN and it found the work AP w/o problem and logged in OK.4> Let PDN go to sleep, waked up and found the work AP again. Reconnect time is no better than before.5> One benefit is that so far, it always reconnected correctly. 7_04 used to report a connection but sometimes would not get internet access.7_24 FW does seem to have a scanning Wi-Fi issue but still worth the upgrade.