uboot version? wiki not accurate

[Helmut Tessarek]

Hi,

I'm still using my original uboot version and I think it is time to upgrade.
Unfortunately the wiki seems not to be accurate, because it states the following:

The latest bootloader binary builds can be found under
http://downloads.openmoko.org/daily/ .

All versions of the GTA02 (Neo FreeRunner) that have been sold to the public are
version 5 hardware, so look for a file with "gta02" and "v5" in the name, for
example: uboot-gta02v5-latest.bin

This is the listing of the above link:

[   ] dfu-util                                22-Oct-2008 01:31  579K
[   ] gta01bv4-lowlevel.bin                   22-Oct-2008 01:31  280
[   ] gta01bv4-u-boot.bin                     22-Oct-2008 01:31  214K
[   ] gta02v5_and_up-lowlevel.bin             22-Oct-2008 01:31  308
[   ] gta02v5_and_up-u-boot.bin               22-Oct-2008 01:31  211K
[   ] testing-om-gta01-20081021.rootfs.jffs2  22-Oct-2008 01:31   34M
[   ] testing-om-gta01-20081021.rootfs.tar.gz 22-Oct-2008 01:31   28M
[   ] testing-om-gta01-20081022.uImage.bin    22-Oct-2008 01:31  1.7M
[   ] testing-om-gta02-20081021.rootfs.jffs2  22-Oct-2008 01:31   41M
[   ] testing-om-gta02-20081021.rootfs.tar.gz 22-Oct-2008 01:31   30M
[   ] testing-om-gta02-20081022.uImage.bin    22-Oct-2008 01:31  1.7M

I assume that gta02v5_and_up-u-boot.bin is the correct image, but how can I be sure?
Furthermore, what is gta02v5_and_up-lowlevel.bin?
Is there a stable version of uboot, or are there only daily builds available?

Helmut