Did Hendrix Restring Guitar?

That guitarist was Jimi Hendrix. The "innovation" that made him most famous was restringing and flipping a right-handed Fender Stratocaster so he could play it with his left. This reason, among many, is why Hendrix is still remembered as the most famous lefty to ever pick up a guitar.

Did Jimi Hendrix flip the strings?

Jimi Hendrix was left-handed and at the time he started to play the guitar, left-handed ones may have been hard to find, so he strung his guitar upside down. Then, even he became rich enough to have access to any left-handed guitar he wanted, he kept playing on his reverted guitar.

Why didn't Jimi Hendrix use a left-handed guitar?

Guitar companies had the same thought process that there's no left handed pianos, so why should we make left handed guitars. Lefty was a special order that cost more money or you could buy an old beat up strat and string it lefty. By the time Hendrix could afford them, he was use to playing right handed guitars.