You do not need a flashed console to edit game saves. Game save editing is all done between the PC and the USB stick/drive.
I mod Xbox 360's and PS3's, I've edited game saves using Hex editing software - I have good knowledge of what goes on here.
Let me firstly say, I do want Diablo 3 for console and I really hope that it is cheat free, but the fact is if they let us save our games offline and then bring back online, we will have cheating, simple as that.
Most likely this is what is going to happen here: There will be a checksum on the gamesave which is a code generated from your gamesave, this code is then compared with the game when reinserting the USB stick back into the console, if the code is correct then you can continue playing, if the gamesave has been edited the checksum will change and thus the game will give an error.
Most games on Xbox 360 don't have much protection, if any, and the bigger and online titles usually have some form of checksum in the game-save. I have never encountered any higher level protection than this on an Xbox 360 save.
Heres the problem with checksums (I have seen them in multiple Xbox games, especially ones that go online, see Guardians of Middle Earth) people can write programs that regenerate and rewrite the checksum, so after editing the gamesave it is just a simple case of fixing the checksum and plugging it back in, hey presto, you have 999,999,999 gold on Diablo 3.
I can guarantee this is going to happen in day 1 to Diablo 3 if they let offline mix with online.
They could technically add more layers of protection to prevent cheating, but I'm sorry it is simply going to come down to time, if our offline game saves are allowed to go online, programmers WILL find their way around the wall. The only way to prevent cheating in D3 Console would be to make the online portion of the game, stay online. It is that simple. I don't understand why they are not doing this, when every other online Xbox 360 game does the same thing. (See Call of Duty, Gears of War, Max Payne 3, Halo etc.)
This is a stupid move from Blizzard to allow this to happen, to be honest it seems like they really don't care about the console version of Diablo 3 having integrity. Diablo 3 is a popular game, and if game saves are downloadable, you can bet your !@# there is going to be around 100 people atleast, including me, on day one trying to edit them.
Edited by Derity#2909 on 7/20/2013 8:03 AM PDT