How to flash the Omnia II (XP) - best practice

[Okie]

ROM Parts - Description
(Recommendation: extract the ROM files using 7zip as it is compatible with every compression and moreover it is freeware; if there are multiple files just extract the first file and it will automatically extract all required parts)  
(extract from Tacchan's description; modified due to experiences made)

Eboot (.eb0):
Comparable to a PC bios.  As it is risky to modify the .eb0, you should only do it for upgrading from WM6.1 to WM6.5 or if you are facing some weird issues.

PDA (.mst or .nb0):
The actual Windows Mobile OS, applications, drivers, etc.

CSC (.csc):
Contains boot images like the HTC devices' splash .nb files, .. also, the charging animation when device is plugged but off, animations for the EBOOT program when you are flashing the phone, and also files and settings that get applied to your Win Mobile when you flash or hard reset.  CSC can e.g. include wallpapers, themes, connection settings, etc.
Although in flasher program CSC file seems to let you select languages, CSC file just have possible language choices, but not the files/settings corresponding to those languages.  Those are all packed in the PDA part (nb0 or mst)."

Phone (.bin):
The radio/GPS firmware.  Sorg suggests not to flash the phone part as it may cause problems of compatibility in case of downgrading the rom or if your phone is locked to some operator.  He also stated that there is no benefit in it.


SAFE FLASHING
Reading the above you will understand that if you want to be 100% safe, you should flash ONLY "pda" and/or "csc".  In case of any error during the flashing, even if you get a non responsive phone stuck on the PC-Phone connection screen, you will be able to flash the ROM again.

Software required for flashing i8000 rom and/or i920 rom
Windos XP with SP3 (if you want to use Window Vista, read here You are not allowed to view links.
Register or Login if you want to use Windows 7 x32, read here: You are not allowed to view links.
Register or Login if you want to use Windows 7 x64, read here: You are not allowed to view links.
Register or Login)
Samsung_CDMA_modem_4_1_.34.zip
OCTANS_Downloader_v2.14.exe


Flashing Procedure
The following steps are as suggested by Sorg, there are other procedures which may differ a little (such as not turning the phone off) that still works but this one I've been using and tested myself and always fine:
0)  Make sure to install (or to have installed already) the Samsung_CDMA_modem_4_1_.34.zip driver.
1)  Make sure your phone is not connected to your computer (ideally laptop); if it is, disconnect it.
2)  Make sure to turn off your phone.
3)  Start OCTANS and fill required fields/checkboxes (MORE DETAILS BELOW on How to use Octans Downloader)
4)  Press "Detect" button.
5)  Connect phone to computer (make sure phone was turned off before connecting).  IMPORTANT: do not connect trough USB hub!
6)  As OCTANS detects the phone, press the "Start" button.
7)  Wait until the whole operation has finished; the phone will restart itself once or twice to update everything then it is ready to set up again.


How to use Octans Downloader
1)  Select the PDA button and open the .nb0 file (if the ROM you want to flash is in .nb0 format); choose .mst OR .nb0! not both!
2)  Select 'Erase CSC' file (highly recommended by our Omnia II chefs!)

[chatmaster20]

Windows 7 x64 link is dead . Thanks.

[Okie]

Windows 7 x64 link is dead . Thanks.

Link has been updated!