Hi! I want to preface first and foremost that the issue I’m experiencing is putting me on the edge for getting a Proxmark3 but I’m not entirely sure if my situation requires it.
I currently have the UG4 installed within R2 (installed March 30th 2025) as well as purchased a Magic Gen4 card for testing purposes. I had recently gone to a bar that uses the MIFARE Classic 1k tag for tracking taps and what not. I had initially scanned it with my Flipper Zero and was able to identify all 32 keys with 16 sectors. I had then used the Magic NFC app to put it on my UG4 but it failed to scan on the tap systems. Rescanning with the same Flipper device it shows 25/32 keys found with 16/16 keys.
I went home and updated my Flipper (RogueMaster CFW) and tested with the Magic Gen4 card as well as a Magic Gen1 card I have and using the xMagic in my R0. They all had read 32/32 keys with 16 sectors except my UG4 still reading with 25/32 keys despite updating the Flipper and trying to re-write the UG4 numerous times.
My ask is if I’m doing something wrong, should I purchase the Proxmark3 to get a full diagnostic as to what’s going on, or is it suspected I might have a defective unit? The UG4 works fine with being reset and applied to with different cards, although I’ve not had much opportunity actually testing it in the field. As a personal opinion, I am slightly disappointed with the read distance, but I don’t know if that’s just me. Thank you!
The UG4 chip is quite nice, but it is sometimes finicky… it might need to be effectively wiped and put back into MIFARE 1k mode, then try updating again.
Here’s the MCT results that I had gotten. A belongs to the Magic Gen4 test card I had gotten, the one that works in full. B belongs to the UG4.
My ask is, do you think I can manage around this with the Flipper Zero or is it time to get a Proxmark3 for a resolution? Additionally, I’m not really sure what’s causing this, so I do apologize.
I have attempted to wipe the UG4 three times and then did the “Set Default Config” on the Flipper Zero three times as well, no luck. Do you know if I’m limited with the Flipper Zero on this?
By the way, I LOVE my UG4, it’s amazing! I also love the recommendation I requested for in Seattle. <3
If it were me I would get the proxmark3… but I don’t really have up to date knowledge on flipper developments. I just know that @iceman branch firmware for the proxmark3 is under constant improvement with the widest possible support scope for new tags and features. It is the defacto standard tool that keeps on giving thanks to having the ultimate configurable hardware (FPGA) and a thriving development community.
Well that’s convincing enough! I was trying to avoid spending extra as I had gotten two flex implants and boy was it expensive! I’ve ordered the Proxmark3 from your site and will give it a go on troubleshooting from there.
If I run into any issues, may I return back here and seek further assistance? Thank you so much!
<3
