And if I may give you an advice on the firmware: either update to the latest 4.1 patch, that will keep your config 100%. Or upgrade to the latest 4.3.14, going through some intermediate versions in 4.1, 4.2 and 4.3.
You find all relevant upgrade information in the Release Notes that you download from the same folder where you get your firmware image from.
Somewhere on the forums Eric posted an upgrade chart, you may find that by searching. But I think the RN are sufficient.
Always make a backup of your configuration first, before starting any upgrade!
Reason for not recommending v5 at the moment is that there are still some bugs in the firmware. Whereas 4.3 is really stable.
(a word on my notation: ' 4.3.14' denotes v4.00 MR3 patch 14 in shorthand)
Ede
"Kernel panic: Aiee, killing interrupt handler!"