Help to Pinning and PAK Lock Problem (DBD Auric Cells Hack Doubt)

Hi guys, I would like know what I'm doing of wrong for can't open DBD modifying the letters and numbers on "HxD" for 00. Help Me, PLEASE!

https://imgur.com/a/LDqYiM9

You have to save in HxD, when this little EAC window dissappear. You have to get the "perfect timing".
(Worked for me after 2 tries)