Do I need to run activate.iso when upgrading (ix 1.4 to 1.6

[Tadmen]

I am using iprep and will be upgrading from iXtreme 1.4 (or earlier) to 1.6. I have updated definitions for the newest iPrep but am confused if I need to somehow disable firmguard?
Or do I just connect the drive with 1.4 on it and do dSam and then do fsam or wahtever the instructions say.
Also I have the original USB drive I used for the original flashing with iXtreme 1.4 (where I have the original firmeware stored as SAM-OFW.BIN. Should I try to use that (I know I would have to rename it to SAMOFW.BIN), or should I just do the dump of what I have now and flash using that.
Last question is that activate.iso. Do I need that at all if I'm using iPrep? I don't even know how I would use that as I would prepare the USB drive using iPrep and then boot to it.
Any help would be appreciated.
I never upgraded from one frimware to another and am conused about the concept of the firmguard and if I should do anything about it or just proceed as if I had an unmodified drive. Also, since I'm using connecivity kit and iPrep, how would I run activate.iso (after I burn it to a DL +R disk). The drive will not be connected to xbox, but will get power from a computer power supply, and will be connected to the PC via SATA cable and connectivity kit.
Thanks for your help

[sadalius]

If your going to use iprep on a samsung drive, you treat it as if it's never been flashed before. No activate.iso or anything. Thats only if your going to use jungleflasher.

[Tadmen]

Thanks for your advice.
I'll let you know if it went well

[Tadmen]

So I'm doing dsam and it's very slow in doing anything. It recognizes the drive and the find it, etc. All other drives are shown as NONE. I have, however and IDE drive C: still connected to my comp.
After reading Banks 0-4 (they all show OK!)
It tells me:
Reading finished! DataSum AC10.
Then it shows the message Sector not found reading drive C
Abort, Retry, Ignore, Fail?
I tried all the answers and nothing happens
What shoould I do then.
Then it shows the message Sector not found WRITING drive C
and it tells me when I hit f (for Fail):
Fail on INT24 - Backups\1234567\12345\SamOFW.BIN
Then again it keeps showing me:
Sector not found WRITING drive C
Abort, Retry, Fail?
Help please

[Tadmen]

I figured out.
After disconnecting the C drive in my comp everything went smooth.
I now have ixtreme 1.6.
Thanks again for your help
Tad

[Tadmen]

It turned out it was a faulty usb drive from Best Buy. It would not properly work when booting and then when reading/writing. After using another usb drive it all worked like a charm.
Everything runs. I flashed 2 separate 360s today using this method.
You, guys, are the best and quickest to give the right answer. I was flashing usingh Cofree's video on iprep 9. Excellent stuff!!!
Hope this helps others upgrading their ixtreme firmware.
Thanks
Tad