After I posted this I actually tried installing tcpdump to my Android phone and using Terminal to run it like this: tcpdump -vv -s 0 -w /sdcard/filename.pcap
I then opened the broadlink app on the same phone and learned codes. After that I opened the pcap in Wireshark.
I found a payload that looked like the codes posted here in QUIC, beginning with 5a… but this didn’t work (tried sending it with Packet Sender and nothing happened).
Where did I do wrong?
And what package is my IR code, and how do I extract it?