Xbox 360 error code E72
Solution 1. Clear Failed System Update
“Xbox 360 error code E72” could be a result of a damaged firmware due to failed system update or the NAND storage device for the firmware is damaged or dead. It is also a caused by a modified firmware, that has received a legit system update from Mircosoft.
To fix this error, try to clear the failed system update, see instruction below.
To Clear Failed System Update
- Turn off Xbox 360.
- Then press and hold the Sync button (the button to sync the controller) and the Power button.
- Release the buttons when it booted up completely.
- It should clear the damage update.
- Re-update the Xbox 360.
If clearing the update was unsuccessful, send your Xbox 360 for warranty claim. If the Xbox 360 has undergone a firmware modification. Try to reload the modified firmware, it might work.