Upgrading problem(-s)

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I have problem with upgrading my PDA:
- USPL dont works for me: after switching to white screen (bootloader) RUU ends with "connection problem" error
- when I keep this (whitescreen) bootloader, then sometimes (i.e. after 10 unsuccesful tries) some RUUs see my phone and try to flash it (only succesfull are B&B v3 and DOPOD 3.7)
- I have no success with flashing from standard bootloader or running system

Does anybody have any ideas where can be a problem?

get the origanl rom for it it always work never any problems

yeah, I'm sure it works, but I'm trying to put a WM6 inside ;)

Is it the same after hard reset?

Its the same all the time. The only way is:
1) upload original rom
2) run uspl
3) when white screen displays upload DOPODASIA_WWE_3.7.707.1_4.1.13.30_02.69.90
4) load Windows.nb from pdaviet b&b v3 (pdaviet 3.7 and touchflo don't work - only white screen after reboot is displayed)
...when some errors happens, I must begin from point 1) :-/

UPDATE: TOM_Artemis_Black&Blue_v3.7 works!
...I'm almost at the end of my way ;)

btw: Is there any way to install InterWrite (czech localisation) ? (standart installation ends with restart during install process)