Need Help Unbricking JakCom R5 w/ PM3EZ

This seems like an odd design feature.
As I imagine the antenna is wrapped around tge circumference if the ring, and if there were 2 chips of the same frequency, with antennas running parallel, this would cause nothing but problems.
IF however they were “folded” and took up half the space each, it might be usable, but you would need to present it perfectly to a reader to get the right chip.

Could you post a link from where you got it?

This is what I would try You can also try without the -t

lf t5 wipe --p 00000000 -t

from there just write whatever you want to it

eg.

lf em 41 clone --id 1122334455

Depending on what you end up with, THIS may be of interest

good luck