BACK IN STOCK @ 3:30 PM EST Jan 18th 2010

To make it easier for first-timers, I copied my how-to upgrade to Tomato post here.

This is a very nice router. Tomato is super stable (better than DD-WRT, from what I've read), the USB port works with my printer (although all-in-one printers can't be used to scan/fax/etc. but only print, at least in my experience).

Getting Tomato on it is actually much less straightforward than simply flashing the old firmware. I'll save you guys the hassle and provide a link to a great how-to:
http://www.society9.com/an-easy-g...sus-520gu/

HOWEVER when you get to these steps:
13. Goto 192.168.1.1, username is admin, no password. You should see DD-WRT admin page
14. Goto Administration->Firmware Upgrade in DD-WRT

After much research it has been documented that after 13 and before 14, it is best to do a "factory reset" from the GUI (same a the 30/30/30) before upgrading from DD-WRT to Tomato.

I think I remember the last time I did this, I skipped this step and I ended up with Tomato firmware whose settings I couldn't access (every conceivable username/password combo didn't work, root, admin, password, blank, etc). I had to re-flash with DD-WRT, then do a 30/30/30 reset, then flash to Tomato, I was able to get in.

Finally, the guide above doesn't mention that after step 19, you should perform the following step:
20. Go to Administration/Configuration and select "Erase all NVRAM..." after installing Tomato.
Source: http://www.polarcloud.com/tomatof...onfigurati

Edit: I forgot a crucial detail if you want to use the USB port with Tomato:
You must use teddy_bear's Tomato mod [linksysinfo.org] instead of the standard Tomato firmware. The steps you follow in the guide are exactly the same, just use teddy_bear's firmware file. If you're too lazy to read the thread, the download link is here [mediafire.com]. I personally use the Lite version.

This is the perfect router for building a cheap Wi-Fi radio: http://mightyohm.com/blog/2008/10...roduction/

Good luck, everyone!

------
Doing a factory default after dd-wrt (before tomato) did not help. After Tomato it did not take any password.
I had to hold the red button for > 20Sec and telnet on port 233 to recover the password (used putty to telnet on port 233)
See here
http://www.polarcloud.com/tomatof...sword_work



Another guide...

Quote from tkeppell : Here is a very good post on DD-WRT forum on how to recover/flash the ASUS WL-520gu router: The WL-520GU is very easy to flash to DD-WRT but keep in mind that it contains the newer Broadcom 5354 chip which requires a special version of DD-WRT. Here are the steps to a successful flash: 2 additional files need to be down loaded to perform the procedure. (Right click on the links and use "save link as"): http://wl500g.dyndns.org/wl500g-clear-nvram.trx http://wl500g.dyndns.org/wl500g-recover.trx 1. Set PC IP manually to 192.168.1.10 (192.168.1.1 gateway) 2. Unplug power cord from wl-500gu. 3. Press and hold restore button (the black button behind the router. You need a sharp pen/pencil) and then insert power cord back into router. When the PWR light starts flashing, release Restore button. Now your wl-500gu is in restore mode. 4. Run Asus Firmware Restoration utility (download from ASUS [asus.com] website if you don't have CD) 5. Choose the wl500g-clear-nvram.trx file and upload it to the router. 6. After the upoad successful message, repeat steps 2 and 3. (the router will not reboot on it's own) 7. Choose the wl500g-recover.trx file and also upload it to your router. 8. After the upoad successful message, repeat steps 2 and 3. (the router will not reboot on it's own) 9. Select a DD-WRT firmware file (http://dd-wrt.com/routerdb/de/dow...c.bin/1964 to upload into the router. The router should reboot after the upload. 10. Perform a hard reset by holding the reset button in while the router is under power until the router starts flashing (this will clear the nvram). The router should reboot. Enter 192.168.1.1 (id is root and password is admin) 11. Reset your PC to obtain IP automatically. 12. You may need to reboot/power cycle all equipment to get everything operating properly. Enjoy DD-WRT Reverting back to the ASUS firmware is very easy too. Just use the above procedure and at step 9, flash in the newest ASUS firmware 2.0.0.8. It's that easy.

UPDATE: How to set-up wireless printing in Tomato (Teddy's USB modified Tomato version). Note: the router does not need to "mount" the device; it need only recognize it. I was able to set-up my Mac and PC using these directions from dd-wrt.com [dd-wrt.com]:

Ubuntu Linux

* Go to System, Administration, Printing.
* Click New Printer
* Choose AppSocket/HP JetDirect
* Hostname: IP address of the wireless printer (normally 192.168.1.1)
* Port: 9100 for first printer, 9101 for second printer, etc
* Click Forward and go on with the printer wizard to select brand, model and settings as you would do for a local printer

Windows XP

* Find your printer in Control Panel - Printers etc. and open the properties page for it.
* Select the Ports tab.
* Click Add Port and choose Standard TCP/IP printer port and click New Port
* Enter you router's IP address (normally 192.168.1.1) and click Next
* Set Device type to custom and click settings.
* Make sure RAW is selected and specify the necessary port number (normally 9100, 9101 for second printer, etc) and click OK
* Click Next and Finish and Close
* Make sure the newly created port is selected for your printer and click OK

Mac OS X 10.5 (Leopard)

* Open System Preferences
* Open Print & Fax
* Click the + button below the list of installed printers
* Select the toolbar button called 'IP'
* Set protocol to: HP Jetdirect - Socket
* Enter the address of your router followed by : and the port - ie. normally 192.168.1.1:9100
* Leave 'Queue' blank
* Set a friendly name for your printer (whatever you like)
* And a friendly location (again, up to you)
* Print Using: choose 'Select a driver to use'
* A list will pop up of all installed printer drivers - choose the one that works for you (see Note below)
* Add your printer

Note (Mac only): the driver must be compatible with the CUPS printing system, which is one of the two printing systems included in OS X. Certain printers e.g. Canon Pixma series and Epson Inkjet include OSX drivers which do not use CUPS. You may find compatible printer drivers from Gutenprint (free) or PrintFab ($). OS X Leopard appears to include certain Gutenprint drivers, but the quality may vary and it may be worth checking their website for updated versions, or try PrintFab.