I purchased a first PM3 Easy (PM3 #1), and have been using it without issue. I have both used and submitted PRs for the RRG/Iceman firmware.
In my critical path, I am successfully using it to get transponder info, write new keys to the transponders, and perform authentications with the transponder. Client commands:
lf em 4x70 info
lf em 4x70 writekey --key A090A0A02080000000000000
lf em 4x70 auth --rnd 3FFE1FB6CC513F --frn F355F1A0
lf em 4x70 write -b 1 -d 7777
I then purchased a second PM3 Easy (PM3 #2) here. It appeared to be from a different source … the box closed with magnets, and the LF antenna’s enamel was a darker orange-red. PM3 #2 is able to read the same transponder. (info
), but has 100% failed every attempt I’ve made to write to these tags (writekey
, write
commands).
[usb] pm3 --> lf em 4x70 write -b 0 -d 7777
[-] ⛔ Writing Failed
[usb] pm3 --> lf em 4x70 write -b 15 -d 7777
[-] ⛔ Writing Failed
[usb] pm3 --> lf em 4x70 write -b 1 -d 7777
[-] ⛔ Writing Failed
[usb] pm3 --> lf em 4x70 writekey -k AA55AA55AA55AA55AA55AA55
[-] ⛔ Writing new crypt key: FAILED
What steps can I take to effectively root-cause this problem? (hw tune
output provided below)
DT Staff – If troubleshooting doesn’t resolve, is there an option to swap for a replacement? (I am in the greater Seattle area, if in-person session would be helpful.)
Thanks!
[=] ---------- LF Antenna ----------
[+] LF antenna: 26.30 V - 125.00 kHz
[+] LF antenna: 19.51 V - 134.83 kHz
[+] LF optimal: 26.30 V - 125.00 kHz
[+] Approx. Q factor (*): 6.8 by frequency bandwidth measurement
[+] Approx. Q factor (*): 7.6 by peak voltage measurement
[+] LF antenna is OK
[=] ---------- HF Antenna ----------
[+] HF antenna: 14.79 V - 13.56 MHz
[+] Approx. Q factor (*): 4.3 by peak voltage measurement
[+] HF antenna is OK