Ok so here goes. Fw: 4.0 I was having problems installing wads (ret = -1), so I decided to try and reinstall IOS60 (via 4.0hackedtools http://gbatemp.net/index.php?showtopic=144835). This resulted in a brick "Corrupt System Menu", thankfully preloader to the rescue. Ran cIOS Downgrader to 3.2E, installed cIOS rev10, installed wamikoo's 4.0 upgrade. So as it stands, I've recovered from the brick and am back on 4.0 with cIOS. But I am nervous to install IOS60 again, will it brick again? And I can't install preloader without IOS60 so if it doesn't work this time, I'm totally screwed.... Opinions? Thanks guys.