Error 0x12 when writing multiple blocks on ST25DV16KC

[RBled.1]

I am attempting to write to a ST25DV16KC part using a Feig LR1002. I first send the inventory command (0x01) then the write multiple blocks command (0x24).

I am getting error 0x12 "The specified block is locked and its content cannot be changed "

01/11/23 10:27:46.827 >> 02 00 09 FF B0 01 00 18 43 

01/11/23 10:27:46.991 << 02 00 1D 00 B0 00 02 03 00 E0 02 51 00 02 56 4A A4 03 00 E0 02 23 00 18 89 2B 09 E3 00  OK

01/11/23 10:29:26.068 >> 02 00 34 FF B0 24 01 E0 02 51 00 02 56 4A A4 00 08 04 04 03 02 01 70 60 00 05 0B A0 90 80 0F 0E 0D 0C 13 12 11 10 00 16 15 14 00 00 00 00 00 00 00 00 18 18 

01/11/23 10:29:26.077 << 02 00 0A 00 B0 95 12 00 94 29  Reader: ISO-Error

[JL. Lebon]

Hello,

Well, may be one or several blocks you are trying to write are write locked...

You can check if a block is locked using the Get Multiple Block Security Status command or alternatively the Read Single/read multiple Block command with option_flag=1.

I'm not sure how to decode the Feig frames, but are you trying to write more than 4 blocks ? (the number of bytes in the Feig frame 10:29:26:068 seems very long)

Best regards.