I think ( I don’t have one ) the R5 has 6 Chips in total
2 x IC ( Mifare Classic 1k not sure if gen1a or gen2 )
2 x NFC ( Assuming NTAG 213, 215, 216??)
Now for your question
2 x RFID , I would assume T5577, however, since you can only seem to be able to program one, my GUESSES are:
- 1 is faulty on yours
- 1 is T5577 known from your PM3 T5 write command, the other is possibly EM, HID Prox etc???
- Your placement is not quite just right ( this on less likely, you know what you are doing)
Have you tried another writer like the blue cloner or white cloner? (another password on it?)
Have you also tried writing OTHER LF modes with the PM3?
Have you tried using the Flipper to write to it in various other modes ( easier placement than PM3 )
It’s always good to drop this as a reminder to everybody occasionally, because manufacturers/ vendors perpetuate the misconception through the use of “RFID” to refer to Low Frequency