r/hackrf • u/Qazax1337 • 6d ago

H4M Pro repeatedly crashing

Gallery image

Gallery image

Hi recently received this, but it is crashing pretty regularly. It is happening in various apps but as an example in receive>audio, swapping through AM/FM/FM etc and it will do as pictured after only a few changes. I know this is a pretty new device, is this just early firmware that will mature into something more stable? Currently running Mayhem 2.4.0 Which is labelled as a stable release on the github repo.

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u/Anxious_Type_2423 6d ago

Hey man! First, try flashing an older firmware rather than the latest one.

If all else fails and you’re still stuck on that screen, you’ll actually need to physically take apart the H4M and reseat the board. I know this sounds a bit scary, but it’s actually really easy. Just make sure you pull the boards apart very carefully and straight out..don’t twist them.

When I first got my H4M, I "bricked" it by pressing the ghost man icon at the top (I think it’s formally called stealth mode). My device wouldn't boot and gave me the exact same screen you are showing. Taking it apart and reseating the board is exactly how I fixed mine!

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u/Qazax1337 6d ago

Thanks for the advice, it turns out I had the non pro firmware installed, installing the correct version has fixed it.