I tried to flash the stock recovery back onto the phone. Although it worked, I had less than satisfactory results.
The phone would not wake up if asleep, even for a phone call. I would have to do a battery pull and reboot.
So I flashed the 410 initialization tool. The phone would operate fine as a wifi only device, but as soon I turned the cell radio on it reboot.
I tried a couple of different basebands until Doctoror sent me the stock baseband. That fixed it for the most part except no LTE, at all. If I tried to install the update I would have to start all this over again. In the end I warrantied the phone through Assurion.
I did this four times, so it is repeatable.
I would think that if you were to try this you would probably have the same end result. You can fix the phone back for the most part, but you still won't have the update unless you use Doctoror's ROM.
BTW, I really like the Korean version of this phone. The UI is much nicer than the one we have.