Thanks for a good article. FYI, the download here seems to contain the CHK version rather than the BIN version as implied:
http://www.myopenrouter.com/download/18897/NETGEAR-WNR3500L-DD-WRT-Firmware-S...
Also, could you document the back out process of going back to the Netgear firmware? Does DD-WRT allow you to change back to the Netgear CHK firmware directly?
Upgrading to DD-WRT on NETGEAR WGR614L or WNR3500L: Demystified (Page 4 of 4)
Categories: WNR3500L WGR614L (Legacy Product)
- How to Install Tomato Firmware on NETGEAR WNR3500Lv2
- How to Debrick Your WNR3500Lv2 Using Windows and a USB-TTL Cable
- How to Install Third Party Firmware on NETGEAR WNR3500Lv2
- NETGEAR WNR3500 Comparison Chart: How To Identify Which Model Router You Have
- Quick Review and Specifications of NETGEAR WNR3500Lv2 Gigabit Open Source Router
- Want to buy WNR3500Lv2 - At my wits end
DD-WRT Versions
If you look around you will see several versions of DD-WRT. Although it may change in the future, here are the basic details as of the creation of this writeup.
DD-WRT Versions for the WGR614
From the DD-WRT Wiki for V24_pre_sp2 K24 these are the various Build Features and what is included.

Notes
(1)Official dd-wrt builds by Brainslayer
(2)Eko specialized Builds
(3)Smaller VPN JFFS builds are available for 4MB units: downloads/others/eko
(4)Only on DD-WRT v24 (8MB+ flash required)
(5)Apparently, IPv6-related features DO NOT work by default in DD-WRT v24. See IPv6 on v24.
(6)Not available on VPN-builds for v24sp1 (see prerequisites for JFFS).
(7) CFE Compressor needed to run.
For the WGR614 router what you would be looking for would be a firmware file named something like dd-wrt.v24_TYPE_generic.bin where the "TYPE" is one of the features shown above.
Keep in mind that WGR614 only has 4MB available to Flash. So when choosing a firmware make sure you choose one under 4MB.
DD-WRT Versions for the WNR3500L
From the DD-WRT Wiki for V24_pre_sp2 K26 these are the various Build Features and what is included. DO NOT use a K26 version for WNR3500L.

Hopefully this information helps and answers some questions but if you get stuck or have any issues or questions on DD-WRT and your NETGEAR router there are lot's of experienced members here so don't hesitate to ask questions!
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Does this mean that I can skip the step of installing the first "mini" firmware and go directly to the final firmware (now that the file extension is .chk and not .bin)
Is it safe when i have dd-wrt installed on wgr614l upgrading it to the latest firmware with .bin extension ??
Thank you.
The simple instructions I first found (http://www.myopenrouter.com/article/13923/Installing-and-Getting-Started-with... didn't help much in this process. I wonder why those don't include the additional step to get the box reading .bin files.
Is there a similar step needed for the Tomato (uses .trx files)? Is it documented somewhere?
Thanks for the tutorial. Successfully flashed to Kong Mod OpenVPN/Samba3 after a heartbreaking half-hour where I thought the router was bricked.
Not sure what caused it, but the flash was successful only to have the router hang when it tried to reboot. I tried several options--attempting to connect from a static IP, pinging from both wired and wireless connections, live chicken sacrifice--before I remembered reading about a 30-30-30 reset. Reset done, the router booted.
My second moment of doubt came when apply.cgi always caused a port disconnection. Power cycled the router, and everything's been working smoothly from there.

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