Can't rewrite my xEM implant

Support
1

Hi all,

I purchased an RFID xEM implant in 2018 and successfully implanted it and cloned my existing 125Khz building access fob and have been using successfully since.

However the physical fob I cloned broke and I replaced it with a new one, and I would now like to clone the new one into my implant so that they match and doesn’t cause questions from building security. But I can’t seem to reprogram it.

I can read my implant no problem with the portable duplicator I used back in 2018 and I can read the new FOB with the portable duplicator, but I can’t write the new Fob to my implant. No error. Nothing.

I have gone to key copying place that clones RFID as a sideline and he has two different devices that can also read my implant and my fob but can’t write my implant either.

What is going on here, any suggestions?

1 Like
2

your handheld cloner you originally used set a password. this is very common.

without the password you can’t overwrite it.

depending on the make and model of the handheld cloner you used 7 years ago, the password may be a global static password or it might be diversified based on payload.

what handheld writer was it?

3 Likes
3

In preperation of your answer
A couple of options and quick references for whomever helps you out next

The local guy with readers, find out what they are, potentially you can use the guides, or maybe just the password, depending on the readers

OR

Get yourself a Proxmark3 or Flipper Zero and use the following guides to remove the password,

OR

Looking at your name, and timezone, you are likely in Melbourne.

I’m going to try a Hail Mary and drop a @Compgeek here.

He MAY be able to help you out

or POSSIBLY his brother @PulsarForce

4 Likes
4

i’d go for the proxmark as there is the potential need to sniff the password from the handheld writer (if diversified) which the flipper can’t do.

2 Likes
5

Yes I have the Blue Cloner which I bought with the implant from ChipMyLife.

Reading the Blue Cloner how to, it should be able to reprogram one that it has previously programmed shouldn’t it?

Does that mean antenna alignment issue and I just need to keep trying?

I mentioned to the copying “guy” it might have a password, he said “that’s a problem”.
You can’t set that? - “No”.
Have you heard of Proxmark? “Yeah I’ve got that but I don’t use it, sorry”

Don’t think he’s my guy!

@Compgeek or @PulsarForce can you assist?

1 Like
6

it should, because it using the same password.

Quite possibly, and this might help you also.

2 Likes
7

It would be a weird request, but can you ask him if you can borrow it?
Or buy it off him since he doesnt use it…

3 Likes
8

oh, if I wasn’t clear, If you get your hand on it, we will step you through what you need to do, from set up, to password removal to rewriting your xEM

4 Likes
9

Thanks. He’s a bit of an odd guy but I’ll go ask him when I’m back in the office next week.

3 Likes