I downloaded version 2.80 of the firmware from here.  I’ve also posted it here just in case.  I found some instructions here to upgrade the firmware, and I’ve reposted them here for posterity:

How to Download the Upgraded Firmware

Make sure the power supply is fully secured during the whole process of Firmware Upgrade. We recommend to use as fully charged batteries and AC Power Supply together for un-interrupted power supply during the Firmware Upgrade.

1. Download and save the firmware to your hard-drive. Unzip it to find the .HEX file.
2. Make an Upgrade CD by burning iMP-350.hex onto a blank disc.
3. Connect iMP-350 to AC adapter.
4. Insert Upgrade CD into iMP-350.
5. Press Play Button to permit Power Supply to iMP-350. LCD display will show the iRiver Logo and Loading during the course of firmware upgrading. Blinking display is normal during upgrading. *DO NOT TURN THE MACHINE OFF DURING UPGRADE* *IF NEEDED CHARGE BATTERIES FULLY BEFORE UPGRADE SO THE MACHINE WILL NOT TURN OFF DURING UPGRADE*
6. After completion, power will shut down automatically.
7. Remove Upgrade CD from iMP-350.
8. Insert a music CD and turn it back on.

Conclusion

Overall, it’s a really great player.  I think I’m going to enjoy using it thoroughly!

Do not try this if you don’t know exactly what you’re getting into.

So, last month sometime, BrainSlayer got DD-WRT working on version 8 of the WRT54G. Now this was great news to me when I read it since I’ve been wanting to get rid of the crappy LinkSys management from the beginning. Some of the procedure worked, and some of it didn’t for me.

Do not try this if you don’t know exactly what you’re getting into.

Here’s what I ended up doing:

• Go here and look at the state of things.
• Read flashing.txt. It helped me immensely.
• Download the DD-WRT firmware and the version 8 VXWorks killer and put them in a safe place
• I use Ubuntu, so at this point I installed tftp:

sudo apt-get install tftp

• Go to the flashing dialog and flash the VXWorks killer firmware you got.
• Once the router reboots, get a beer while it warms up. This should take 1 to 2 minutes.
• Unplug the router and plug it back in.
• Wait while it boots (20 seconds).
• Set your ip and default gateway:

# Replace <interface> with whichever network interface you're using.
sudo ifconfig <interface> 192.168.1.100
sudo route add default gw 192.168.1.1

• Ping the router. Hopefully this works…

hank@rofl:~$ ping 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.792 ms

• Send the new firmware over. Make sure to set your mode to octet! You should see a bunch of blinky lights on the router for a few seconds, then tftp should output the number of bytes transferred.

hank@rofl:~$ tftp 192.168.1.1
tftp> mode octet
tftp> put dd-wrt.v24_micro_wrt54gv8.bin

• Get another beer. While you do that, your firmware is being reflashed and DD-WRT is booting up. You should see the power light go on, then off, then on again, then blink, then stay on.
• You should be able to get DHCP now. Try it:

sudo dhclient <interface>

• If that worked, head over to http://192.168.1.1 to the admin console.
• Change the settings to your liking. The default account is root/admin
• Change the maximum connections to 4096 and the TCP and UDP timeouts to 90 each in the main Administration page.

This should yield you an awesome setup. I’m very happy with mine.

References

Hack Attack: Turn your $60 router into a $600 router

Files

Oh, and just in case DD-WRT’s site goes down in the middle of the procedure (like it did to me), here are the files:

Firmware
VXWorks Killer