diff --git a/doc/magic_cards_notes.md b/doc/magic_cards_notes.md
index a3d9627fd..c02b59e53 100644
--- a/doc/magic_cards_notes.md
+++ b/doc/magic_cards_notes.md
@@ -186,6 +186,14 @@ hf mf cwipe -u 11223344 -a 0004 -s 08
 # MFC Gen1A 4k:
 hf mf cwipe -u 11223344 -a 0044 -s 18
 ```
+or just fixing block0:
+```
+# MFC Gen1A 1k:
+hf mf csetuid 11223344 0004 08
+# MFC Gen1A 4k:
+hf mf csetuid 11223344 0044 18
+```
+
 ```
 script run remagic
 ```