I connected a 16Mhz external ceramic resonator to my ATMega8 between the Xtal1 and Xtal2 pins with 30pF caps between either leg and ground, then I tried to set SUT_CKSEL to one of the "Ext. Crystal/Resonator High Freq." options in AVRStudio. Now I'm locked out, and can't erase the uC nor program it via ISP. I can only read the target voltage.
I've tried removing the resonator and caps and setting it back to how its was originally to no avail.
Any solutions to this problem?