How can you say that we have not finished yet lol.. and you do have some success.
Its fantastic news so far because you are one more step to fixing it, FORGET RECOVERY MODE! to update . 90% chances it will fail.
If you used the file2, and its powering up and not powered down after a reboot , then you have fixed it, you just need to use the E3 to brute-force a flash, because I don't believe you will have a easy way trying your way.
You do really need to downgrade then upgrade to remove some of the crap left behind from that firmware that was there before.