Script for .bin file

KiyooMTP

this script will execute restorehwmode.sh in shell what if i only want to execute it in su?
#! /bin/sh

restorehwmode.sh
sync
sleep 5
reboot
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the equivalent of that script in manual telnet is

telnet 192.168.100.1
root
admin

su

shell

restorehwmode.sh

my question is how to make it execute in only su? not in shell