Pag uupgrade? Update ng OS ba ang tinatanong mo? Usually wala namang masama. Pero in rare instances may bugs. Siyempre benefits updated at mas secure ang phone mo. Pero pag sa usapang root, usually, baka hindi na gagana ang ibang method ng root sa mas updated na phone. So keep that in mind. In general, it's okay to update phones. To be safe, always keep file backups.