My R button has desoldered, how can I fix it?
My button R it’s now desoldered.
What tools I need to sold it?
A soldering Station? of what watts? or temperature (400°?)
You can buy an inexpensive soldering station that is good quality from hakko I believe it's fx888. Ifixit might sell it.
Ifixit does sell the entry level hakko soldering station fx888d for 99 dollars. If you plan to learn I would try that one.