It's very simple to do, once you have done what lincpimp says. After that, start up the software, and select 6.0v from the drop-down menu. Then click "Update" and you're done
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SH Z-Car, Custom Crawler, 8s Savage,
12s XTM XLB 1/7 buggy,
4wd 4-link rear/IFS Pro4 truck,
Custom Hyper 10 Short Course,
Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz