diff --git a/openepaperlink.md b/openepaperlink.md
index d6c756a..d2dfcf0 100644
--- a/openepaperlink.md
+++ b/openepaperlink.md
@@ -3,7 +3,7 @@
 ## mass flash event
 
 0. determine serial number from device
-0. extract MAC (8byte) from flash 0x74004? (found @ 0xFC0B, 8 bytes for MAC ?)
+0. extract MAC (8byte) from flash 0x74004? (found @ 0xFC06, 4 bytes for MAC ?)
 0. infopage MAC (8byte) from eeprom 0x10
 1. backup 64k flash
 2. backup 1k eeprom infopage (calibration data and possible MAC)