The way to improve academic qualifications is simple. Take the exam every year 10, and it is too late to register in September.

The way to improve technology is to find a training institution, choose one who can work hard for it and work hard professionally.

Furthermore, do these two things at once. Don't lose heart. 30 years old is very young. Compared with 40 years old, there is really no hope. It's not too late to start working hard.