Here's a 3d printable jig to hold your transponder securely while programming it. I've got enough spare pogo pins to mail a few out for anyone whose thinking of getting some transponders. If you don't have access to a 3d printer, I'll be happy to send a print as well to those who have bought transponders.


Available at https://www.thingiverse.com/thing:7310937

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I got a pair of OS transponders showing up in OpenStint with the firmware you provided. I initially flashed the hex I created but despite getting flashing light when powering it up, don't get any hits with the hackrf. I'll need to spend some time to figure out my mistake, but I have an idea.