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However, since your router is booting and not "bricked" I doubt this will be necessary. If all else fails and a 30-30-30/cold boot isn't allowing you to get in, you may need to try recovery methods such as TFTP (risky) or using a serial cable. Root/admin should work as default, although flashing with a Kong build will usually prompt you right away to enter your desired admin username/password. If it's a Kong build, the version info should have some reference to that, like: "Firmware: DD-WRT v3.0-r33525M kongal (10/16/17)" Did you use the file from here or from Kong's site? These were just recently updated, and it looks like the first flash you performed was for a much older version of DD-WRT.
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