I started screwing around with skins and now my Wiz boots up, and then just goes black after the orange boot screen. What did I screw up this time/how do I fixed Wiz?
I had the exact same problem a while back and no matter what I tried, I couldn't get back to the regular screen and I was afraid it was bricked... So I tried upgrading the firmware to the next version and that worked! So from then on I didn't bother trying any kind of new skin or shell or anything. And so far my WIZ has had no problems.
Not sure, but reflashing the firmware should fix it. Download it here, http://dl.openhandhelds.org/cgi-bin/wiz.cgi?0,0,0,0,42
Try to use a stardard sd card not an sdhc. I use a 1gb Sandisk, for example, just for updating firmware.