I forgot to ask, Should i install 9.0, do the v9 bios update, then the 9.1 update?

Hey everyone,I have a Tiger Touch Pro that has been a blessing and a curse. We bought the board and within two months the screen was broken in transport to a show. So it was sent off and it took 4-5 months to get it back, and stayed stable for a good while,then out of no where It began to crash occa...