How to revert back an OpenWrt router configuration

Your router has been misconfigured and you can't access your router anymore. To fix it you need to do a restart process. Here are the steps:

Put your router in failsafe mode:

Set your PC ip: 192.168.1.2 and subnetmask 255.255.255.0 and gateway 192.168.1.1 (computer may need to restart)

Power off the router

Disconnect the WAN cable

Only connect your PC Ethernet cable to ETH0

Power On the router

Wait for the router to start the boot sequence (SYS LED starts blinking)
When SYS LED is blinking, hit restart button (SYS LED will be blink in a faster rate means your router is in failsafe Mode) (you have to hit the button before the router boots)(you may need to press the restart button twice to enter failsafe mode)


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'Factory reset' to default config

Enter console commands:
(You may need to activate Telnet on Windows)

# telnet 192.168.1.1

(wait for the OpenWrt BusyBox front page indicating "FAILSAFE MODE active)

 === IMPORTANT ============================
  Use 'passwd' to set your login password
  this will disable telnet and enable SSH
 ------------------------------------------


BusyBox v1.19.4 (2013-03-14 11:28:31 UTC) built-in shell (ash)
Enter 'help' for a list of built-in commands.

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 -----------------------------------------------------
 ATTITUDE ADJUSTMENT (12.09, r36088)
 -----------------------------------------------------
  * 1/4 oz Vodka      Pour all ingredients into mixing
  * 1/4 oz Gin        tin with ice, strain into glass.
  * 1/4 oz Amaretto
  * 1/4 oz Triple sec
  * 1/4 oz Peach schnapps
  * 1/4 oz Sour mix
  * 1 splash Cranberry juice
 -----------------------------------------------------
root@(none):/#





# mount_root (to mount the JFFS2 partition)

# firstboot

# rm -r /overlay/*  (or /overlay/upper/* on some routers)

# mtd -r erase rootfs_data (this will reboot the device as part of the process)



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Once your router restart go to address: 192.168.1.1 in your browser


That's it.