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Im currently running Cognition v3.02, do I need to flash back to stock first before flashing Cognition 4.0? thanks...
I have the same inquiry... I think if it's the same ROM, you're good.
4.1 simply rocks it so nice to have the phone running the way it should
not a single bug so far
I flashed it this morning and wound up coming back to Andromeda - It was nice, glossy, and seemed solid, but my GPS went to crap compared to other ROMs.
I heard 4.0 didn't have the same GPS "fix" that 4.1 does, so maybe that's the way to go.
PLUS - I wish that the "Software Update" in Settings was removed... not a biggie, but that feature obviously isn't going to work with a ROM anyway...

When you do incremental upgrades (say Cog 4.0 to Cog 4.1) what is the proper way to proceed?
Right now I have the beta froyo 2.2 on my phone. Would I need to flash back to stock to put cognition 4.1 on my phone?
I think I am going to go with Cognition 4.1 for my wife's phone. She doesn't care for a ROM, but I flashed her phone with stock 2.2 and then rooted and it boots slow and overall feels a little slow. She likes stock and I like her to have Droid Wall, Titanium Backup, and AT&T apps removed. Plus I know she will notice a difference in speed with Cognition.
EDIT: Just looked. Looks like I am waiting for 4.1.1 to come out so I only have to flash my wife's phone once.
How did you flash to stock 2.2? As far as I know you can only flash back to 2.1 JF6 firmware.
Not entirely true.
If you use ODIN-1-CLICK, then yes, you'll have JF6.
If you use ODIN3, you can actually select the firmware version you want. You'll have to download the firmware first, but search and you'll find the file.