r/Safes • u/hsiang051 • 11h ago
SentrySafe SFW123FSC – Factory Code somehow changed to 00000. Is it possible to restore it?
Hi everyone,
I recently purchased a SentrySafe SFW123FSC and encountered a strange issue with its electronic lock.
Here's what happened:
- Initially, everything worked normally. Both my original Factory Code and my custom User Code were valid.
- After removing and reinserting the batteries, the keypad started flashing red and beeping 5 times, indicating a communication error.
- After a while, the communication error disappeared, but my original Factory Code was no longer accepted. The keypad would beep 3 times instead.
- I tried replacing the batteries with brand-new alkaline batteries, but it didn't help.
- Eventually, I managed to regain access using the open-source
bypass-sentry-safeproject on GitHub. - Afterward, I discovered that the safe now accepts
00000as its Factory Code.
I've confirmed that 00000 is functioning as the Factory Code because:
- It can unlock the safe.
- It can authorize changes to the User Code.
- My original Factory Code no longer works.
I didn't specifically test 00000 before using the GitHub project, so I can't say for certain when this happened.
From what I understand, SentrySafe's Factory Code is supposed to be permanent and cannot normally be changed.
Does anyone know if it's possible to reprogram or restore the original Factory Code?
Has anyone experienced something similar or worked with the firmware or EEPROM of these electronic lock controllers?
I'm mainly trying to understand what happened and whether the original Factory Code can be restored without replacing the entire lock module.
Thanks!


