[MDA, XDA, 1010 Software Upgrading] xdaman@ji-net.com:
Huray. .. i find the way to downgrade wallby 5.17 to 5.15

may be it's can help u

fist please read this fixbootloader.zip is work for .........

This tool depends on specific memory locations for certain roms.

It does verify that it is talking to a known rom. It also does a very

minimalisitc check if the file presented to it resembles a bootloader.

I tested it with 3.16.52, 4.00.10 and 3.04.00 ( the very old ppc2003 rom ).

It should also work with 3.17.03, 3.19.01, 4.00.01 and 4.00.05.

unpack the archive, from the command prompt, in the 'build' directory

run 'pnewbootloader bl515.nb0'.

it should take about 10 seconds.

output should be something like this:

C:\fix\build>pnewbootloader.exe bl515.nb0

protection found at 8c0d62d8

result: 00000000 00000000

Bingo........u have wallaby 5.15 absolutely

This is my step but i flash from 4.00.11Eng Wallaby 5.17 to 3.17.03Eng cook from http://xda.weblink.net ( may this my method not work for u )

first i must go back to ppc 2002 with ver 3.17.03

1.i burn sd by patch wallyby 5.17 with xdarit ( ver 1.3 M ) check box in 1k

2.insert sd to xda

3.press power+soft reset

4.that show screen ................patch press action to continue

5.press contact button

6.that show new menu is restore from sd ( oh god how u can do that xda-development teams ........thx very much )

7.i burn rom 3.17.03 that cook from http://xda.weblink.net ( thank again ) make sure when u cook this rom u did't check box except only for 3.17.03 that have simunlock already and i download in Nk.zip ( sd method )

8.burn Nk.nb1 with xdarit ( ver 1.3 M ) check box in 3.5k

9.press action to restore

10.that confirm to abort or yes press yes

11.wait.........not over than 5 minutes

12.that show screen check sum ok ....succesfully ........ cold reboot

13.press hard reset button ( near earphone plug )

14.boot screen and u have ..... welcome ppc 2002 ... try next step that show on screen and sync with u pc by Guest

15.find bootloaderfix.zip in this forum u can download somewhere.......

16.copy and paste it to Harddisk and extract to bootloaderfix\

17.go to start menu in ur Pc.... i use winXp

18.choose run and type this cmd it will show ur Dos command

19.in Dos command may be will show C:\Documents and Settings\new> u must type this C:\cd\ to go to C:\>

20.type C:\cd bootloaderfix to go C:\ bootloaderfix>

21.type C:\bootloaderfix>cd build to go C:\bootloaderfix\build>

22.type C:\bootloaderfix\build>pnewbootloader.exe bl515.nb0

23.Enter it and if it's not wrong that show this screen

C:\bootloaderfix\build>pnewbootloader.exe bl515.nb0

protection found at 8c0d62d8

result: 00000000 00000000

24.Congratulation now u have Wallaby 5.15 already u can check by unpluck ur cradle and press soft reset+power to check

25.Now that's free times to Upgrade or Downgrade with no problem

26.in Wallaby 5.15 U must use Xdatool to burn rom in ur sd or mmc no need Xdarit anymore hehehehe ( very fast to write rom ..don't believe me? try with ur self )

27.finish........and up to u to upgrade in wm2003 or ppc2002 any version......... huray.......

May be this i write it's cannot help u so much .....but i trust may be it's useful for dump man like me to downgrade Wallaby since i try to read more than 400 topic in here....... : )

and if u cannot flash 3.17.03 in sd because ur Wallaby block it....try to make rom is Nk.exe file but it's very risk to up/downgrade

by activesync because i broke my xda to dead because my com is Hank......... spare ur UPS to protect accident like me...

and so very Sorry in Very Bad English because it's not my tongue language : )

try to do and reply to me in this forum or my email xdaman@ji-net.com Thx....xda-developers teams again ........