Dude the last phone I rooted was a Galaxy S2, it's been awhile since I've had to fool around in the ADB. I just remember this was the site I used to use and is generally reliable.
You should be able to download that image file on your computer, put into the appropriate ADB folder and /push ADB that image to your phone storage. At least that's how I remember doing it in like 2012 lol
Lame
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