In this video I show how to change the front brake pads on a mk1 first generation hyundai i10 built between 2007 - 2015 in some markets and up to 2013 in others !!
You might need to push the piston back more, that can be done with a few different tools such as a c-clamp, a big pair of pliers or a brake caliper rewind tool sometimes the pistons can get a little stuck so it will need more force to push it back, hope this helps !