I do not know what amazon or ITM are selling.
For E4 models sold over the last couple years you pretty much only need to read this thread.
I guess noone can tell you if All sw and hw versions can be done, your ask is unrealistic. For a list of fw that i know about refer to post #18 of this thread.
Thanks Bud for your response.
I wondered that it was impossible to say that all SW/HW versions are hackable. If you were me, would you buy the one available from Amazon.ca?

.
I know it's a silly question, but it's a lot of money (for me
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) and I want to be sure that I'm doing the right thing

.
Also, I was not able to find the list of FW in the post #18, am I missing something?
Thanks again for your response!
Bye