FLASH FAILED

[einas_canada]

Hello every 1
I am trying to upgrade my Radi STack (RSU)
I have an excutable file with the new RSU. When I ran, it takes me through few steps where at the end my XDA is rebooted and I get a button on my screen that says "Start" to start the upgrade process. When I press it, after few seconds I get a get an error message saying "Falsh Failed". When I press Ok (what else?!), The XDA is rebooted again and the process is repeated. If I do a format for the XDA, things go to normal.
DOes any 1 know what is going wrong here and how to fix this?

THX

[valheru]

Which ROM do you have? Which ROM are you trying to install? Etc.

[einas_canada]

I have 3.18.04 and R3.23.01 for the RSU and bootloader 5.22
I am trying to install the RSU 4.16
Also, when I have tried to install the XDA speciall ROM, it didn't work where after I see the screen "Upgrading" on my screen and the upgrading window on my computer asking me to wait for about 5 minutes, the activsync link is disconnected.

It is not clear to me what is the problem, is it the ROm, the bootloader or what?