Are internal hydro-cooling plates of M63S+ made of aluminum?

Simple Introduction to WhatsMiner D Series

Does M65S+ natively support 80°C operation without customizations?

I have a WhatsMiner miner and need to upgrade its firmware to the latest version. I do not have a computer, only an Android smartphone and an SD card. How can I complete the firmware upgrade without a computer?

I aim to maximize hashrate regardless of power consumption. In WhatsMinerTool, I have set the performance mode to Normal (10%-20%-30%-40%), but the hashrate does not reach the target value. What should I do?