From your question, you are definitely not a noob
1.The radio is just flashed so "something gets done" as the ruu needs some activity. Its just a stubborn prerequisite at the moment, task 29 doesn't format the radio. As someone mentioned you could just go ahead and use a splash screen flash not even a radio, which takes even less time.
2. There is nothing wrong with CustonRUU, when you finish using the above tool, then upon device restart boot in bootloader and go ahead with RUU and the rom of your choice. I know what might have confused you is the people saying why doesn't it task 29 then flash "automatically". Well its just laziness talking
, Basically they want the it as one task and not 2 as its now. Now you do two things (although the first one is very very short), so its no biggie.
So to break it down into steps, maybe easier to understand (if I have this right):
Basically you have 3 choices currently (and are wishing for a 4th one):
a
With the above tool:
1. this tool will first flash radio or splash screen or even rom (all of them are actually useless, but are necessary to perform, for the next step to work, and we opt for radio or splash screen as it takes a much shorter time than a rom)
2. it will perform task 29
3. On restart, enter boot loader (Vol up/down)
4. Radio will be fine, but there will be no rom on device (due to the above task), so you flash the rom of your choice.
b
With MTTY:
1. (a) On Vista/Win7: go trough the headache of installing unsigned drivers (see MTTY guide) then install MTTY (sometimes windows update might reconfigure/overwrite these driver to the new ones on its own, so might have to perform this task every time you want to MTTY)
1. (b) On XP: just run MTTY
2. input MTTY commands in consul (tesk x, task y, etc.)
3. 3. On restart, enter boot loader (Vol up/down)
4. Radio will be fine, but there will be no rom on device (due to the above task), so you flash the rom of your choice.
c
With stock rom
1. Flash stock rom (it takes a long time, but task
28 is performed, which seems to be just as good and some even argue its better)
2. Flash custom rom of your choice.
d.
Not yet available The tool some are asking for (obviously would be good for all of us):
Run the fully automated tool/modified RUU which will:
1. Perform task 29
then
(maybe even automatically restart itself in bootloader)
2. flash custom rom.
I hope I have all this right, so might help some folks, more easily understand what this tool actually does. I haven't actually tried this new tool (waiting for a new rom), so might have gotten some points wrong. If so, please let me know and I will edit the steps.