Bootloop on Blu Vivo XL

A

AC Question

I got my Vivo two days ago, and installed kingroot in order to delete some of the useless apps (google newstand etc.). Also downloaded SwiftKey and so decided to delete the Google keyboard.
Yesterday, I was in the process of rebooting the phone after inserting a new sim card, and it was taking forever to restart (like over 10 minutes) so I did a factory reset. When the phone finlly did come back alive to the startup page, I realized I couldn't sign in to google (no keyboard). Luckily the option to skip the google setup appeared after several more resets and reboots.
Once I press skip, the phone enters the colorful blue startup screen and stays there :(
Any help would be sooo appreciated... I love this phone. I've tried to find an answer myself but it seems I probably need to "reflash the stock rom?" How does one do this? I would love a newbie-friendly step by step.
 

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