@Skink do you still have the source code from https://github.com/m5stack/PbHUB/tree/master/PortB_HUB/Firmware ?
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		Latest posts made by emil82
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    RE: Driver firmware - PbHUBposted in PRODUCTS
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    Restore PbHUB Firmware?posted in UnitsNeed Help! i flashed custom firmware on phhub. How can I restore the original firmware Firmware https://github.com/m5stack/PbHUB/tree/master/PortB_HUB/Firmware no longer exists ! where can i get the original driver firmware?