Not able to boot to preinstalled OS

Hi All,
I downloaded the mcos2 bin image.Using the option [a] - Absolute User
Application.

1. Now i am not able to boot to the pre installed OS that is shipped with
board.How do i load the bin?

2. I would like to modify Mcos2 Application to load my own binary. What
would be the best IDE to develop the Application?

3. I am totally confused with NOR and NAND options.
   a. If i am not wrong the bootloader exist in NOR flash.And the 
Application and OS resides in NAND.
   b. If i were to load uboot it will sit in the NOR Flash?

4. If i were to write an application for ARM (preferably C/C++) in
Linux/Windows which would be the best cross-compiler to be used.

Hope this will clarify my initial doubts.

Thanks to all in advance

1. start all over again by JTAGing in a new bootloader??

2. no idea

3. I left Superviv in NOR and put u-boot in Nand (plus OS and app).  If
anything goes wrong you have Superviv in NOR to start all over again.  If
something goes wrong in NOR (bootloader) you have to JTAG in a new
bootloader.  May as well get use to JTAGing in new bootloaders as it won't
be long before you need to!   

4.
www.codesourcery.com/sgpp/lite/arm/portal/package3696/public/arm-none-linux-gnue
abi/arm-2008q3-72-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2

Thanks Dave for your time.......

But when SW2 is in NOR mode.....I am able to get the boot menu.
Does this mean that SuperVivi still exist in the NOR Flash?

You mean i have to use the JTAG wiggler that came along with the board.
For that i have purchase an parallel cable.Is there a tool were i can
select the bin to be flased using JTAG.

Can't i do this flashing using DNW tool?

Yes, you appear to have a working Supervivi in NOR . . . this is good.

If you corrupt your NOR bootloader you need H-JTAG 0.9.2 from the downloads
page.  Very good instructions and easy to use.

DNW is really only for "talking" to Supervivi.

Thanks again....

But I am still curious..

"DNW is really only for "talking" to Supervivi"
I was able to download bin images using the Tool "DNW" to Flash?


Besides downloading binaries using H-JTAG 0.9.2...
Will i able to debug application using eithier KEIL, ADS or say any cross
compiler IDE...

My understanding is that it is the bootloader (Supervivi, in this case)
that actually does the work and that DNW is just a terminal program.  This
is not to say DNW doesn't play an important part :)

debug . . . sounds right, but I have no experience.

Let's try again . . . The second step in the DNW process (v) is to place a
program into NAND called Supervivi loader. This program then loads the rest
of your images into NAND.