On my WRT54GL 1.1 (4 MB flash I think) I currently have Tomato Firmware v1.27vpn3.6.4b664ba6 (by Keith Moyer) and I'm considering to upgrade the firmware to tomato-K26-1.28.7821MIPSR1-Toastman-ND-VPN.trx. Can I use this firmware, and is it as simple as using the flash utility in the Tomato web browser GUI?
I primarily need VPN but it would also be nice to have up to date features and a newer kernel. Would this be the most suitable version? Are there any drawbacks with a 2.6 kernel instead of a 2.4? I'm also unsure about ND. Would ND be safe/beneficial for me?