Hard reset or 30/30/30

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Revision as of 13:04, 18 September 2008 by Soulstace (Talk | contribs)
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DO NOT attempt to reset or power cycle the router while it is still in the process of upgrading!
Wait a couple of minutes after upgrade is complete and the router has rebooted itself.

Hard Reset (aka 30/30/30 reset):

  • With the unit powered on, press and hold the reset button on back of unit for 30 seconds
  • Without releasing the reset button, unplug the unit and hold reset for another 30 seconds
  • Plug the unit back in STILL holding the reset button a final 30 seconds.

This will clear out the NVRAM and set the dd-wrt back to default values.

This procedure should be done BEFORE and AFTER every firmware upgrade/downgrade

Do not use configuration restore if you change firmware builds (different svn build numbers)

Erasing NVRAM:

As an alternative method, it is possible to restore DD-WRT to default settings without using the reset button (useful when the reset button is disabled, broken, etc. or if your router just refuses to reset using 30/30/30).

The following requires that DD-WRT already be installed on your router, and Telnet (or SSH) services be enabled and accessible.

Telnet (or SSH) into

Issue commands:

erase nvram


mtd -r erase nvram

All should be in default settings now.