Interesting reading! It seems larger metal shields could prevent this technique from working. Or, how about mixing the config bits in with the rest of the flash so it all erases at once? Harold -- FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist