If you've already done everything you can to free up space manually and the size of "other" storage is still preventing you from updating, you'll need to reset your phone to cut down on "other."
Kung nagawa mo na ang lahat ng makakaya mo para manu-manong magbakante ng espasyo at pinipigilan ka pa rin ng laki ng storage na "iba pa" mula sa pag-update, kakailanganin mong i-reset ang telepono mo para mabawasan ang "iba pa."