Calibrating delay loop... OK.
Found SST flash chip "SST25VF032B" (4096 kB, SPI) on buspirate_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... FAILED at 0x00009180! Expected=0x45, Found=0x43, failed byte count from 0x00000000-0x003fffff: 0x4db
Your flash chip is in an unknown state.