Proxmark3 community

masterix

Contributor

Registered: 2017-03-28

Posts: 12

T55x7 problems to write page 1

Hi dears,

i'm trying to write data in the page 1 blocks 1 and 2, but seems that it fails.

See the example below:

proxmark3> lf t55 detect p 11223344
Chip Type  : T55x7          
Modulation : ASK          
Bit Rate   : 2 - RF/32          
Inverted   : No          
Offset     : 32          
Seq. Term. : Yes          
Block0     : 0x000880B9

read before write command:

proxmark3> lf t55 read b 1 1 p 11223344 o
Reading Page 1:          
blk | hex data | binary          
----+----------+---------------------------------          
Safety Check Overriden - proceeding despite risk          
  1 | E0150A3C | 11100000000101010000101000111100

write command:

proxmark3> lf t55 write b 1 d e0150a58 p 11223344 1
Writing page 1  block: 01  data: 0xE0150A58 pwd: 0x11223344

read after write command:

proxmark3> lf t55 read b 1 1 p 11223344 o
Reading Page 1:          
blk | hex data | binary          
----+----------+---------------------------------          
Safety Check Overriden - proceeding despite risk          
  1 | E0150A3C | 11100000000101010000101000111100

I'm sure that the password is right

Any ideas?

marshmellow

Contributor

From: US

Registered: 2013-06-10

Posts: 2,302

Re: T55x7 problems to write page 1

You cannot write to blocks 1 or 2 of page one   (without testmode) as they are locked blocks. Containing the traceability data from the mfg.