From 3502fbd82bce2c24e432b7119258d50cd4452762 Mon Sep 17 00:00:00 2001
From: Philippe Teuwen <phil@teuwen.org>
Date: Wed, 10 Mar 2021 12:08:22 +0100
Subject: [PATCH] Fix lf em4x05 unlock

---
 client/src/cmdlfem4x05.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/client/src/cmdlfem4x05.c b/client/src/cmdlfem4x05.c
index f0d2b6cf5..917dd21e3 100644
--- a/client/src/cmdlfem4x05.c
+++ b/client/src/cmdlfem4x05.c
@@ -1692,11 +1692,8 @@ int CmdEM4x05Unlock(const char *Cmd) {
         }
 
         // write
-        res = unlock_write_protect(use_pwd, pwd, write_value, verbose);
-        if (res != PM3_SUCCESS) {
-            PrintAndLogEx(WARNING, "failed unlock write");
-            return PM3_ESOFT;
-        }
+        // don't check the return value. As a tear-off occurred, the write failed.
+        unlock_write_protect(use_pwd, pwd, write_value, verbose);
 
         // read after trigger
         res = em4x05_read_word_ext(14, pwd, use_pwd, &word14);