Opened 4 years ago

Last modified 4 years ago

#15400 new defect

FailSafe-Mode / Reset to default is not working on TP-Link TL-WDR4900 v1

Reported by: anonymous Owned by: developers
Priority: normal Milestone:
Component: base system Version: Trunk
Keywords: Cc:


There is no possibility to enter FailSafe-Mode on TP-Link TL-WDR4900 v1 using latest snapshot (

On a snapshot from Dezember 2013 it was possible to reset OpenWRT to default by pressing and holding reset/QSS button for a few seconds. Afterwards OpenWRT behaves like after a new installation. There wasn't anything left behind from configuration before. I know that this was not normal behavior of FailSafe mode but it worked if router was bricked.

After sysupgrade to latest snapshot also this trick stops working.

Perhaps a useful information:
If pressing reset/QSS button for less than one second router reboots. This behavior didn't changed after sysupgrade.

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Change History (3)

comment:1 Changed 4 years ago by anonymous

It's seems like FailSafe is not implemented. At least I didn't see any functionality like it in /etc/rc.button/failsafe.

But I found the reason why reset isn't working. It's defined in /etc/rc.button/reset that router should reboot if button is pressed less than one second and router should be reseted to factory default when it's pressed for more than 5 seconds. Last one is not working.
As reported in log button is working.
Factory reset is implemented as this command: jffs2reset -y && reboot &
It's not working because jffs2reset -y is asking for conformation.

comment:2 Changed 4 years ago by anonymous

fs-state overlay jffs2reset -y is working. Or changing jffs2reset to parse parameters forward.

comment:3 Changed 4 years ago by hnyman

Thanks. I added the explanation to #15371, of which this is a partial duplicate regarding the reset functionality.

(Failsafe mode is entered differently and is another thing.)

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