Early testing of the new v4 bootloader uncovered a bug, but upgrades now appear to be going smoothly for everyone. We still need additional testers before it’s ready to deploy. If you have access to a PIC programmer, please consider testing the bootloader upgrade release candidate. We’ve had about 10 successful upgrades, it would be great to have twice that many before inviting other Bus Pirate users to upgrade.

If you have any feature requests for the v4 firmware, feel free to list them here.