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doc: 15693 V3 finalize erases the whole tag memory

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The notes said block 0x15 reads back as 69 E2 5D 00 after finalize. It reads
back as 00 00 00 00, and so does every other block.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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歐歪andClaude Opus 5 committed 2026-09-22 21:08:19 +08:00
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@@ -2716,7 +2716,7 @@ V3: blocks `0x14` and `0x15` hold a signature while the tag is not finalized.
```
hf 15 raw -ac -d 022014 # A5 2B 44 2C
hf 15 raw -ac -d 022015 # 21 AE 93 00 (69 E2 5D 00 after finalize)
hf 15 raw -ac -d 022015 # 21 AE 93 00 (00 00 00 00 after finalize)
```
@@ -2765,7 +2765,8 @@ hf 15 raw -acw -d 02211077665544
hf 15 raw -acw -d 022111332211E0
```
Finalize locks the UID for good and can't be undone, block `0x15` changes to `69 E2 5D 00`:
Finalize locks the UID for good and can't be undone. It also erases the whole tag
memory, every block reads back as `00000000` afterwards:
```
hf 15 raw -acw -d 022114A52B442C