Microarcitecture

I have a Xiaomi Redmi Y2/S2 (YSL) which has Snapdragon 625 chipset. It consists of 8x ARM Cortex A53 CPUs which has ARMv8-A architecture (which is a 64 bit arch). However, the Droid Hardware Info app says that it has armv7a which is 32 bit, why is that so?

So, a couple days ago I flashed a custom BIOS on to my new computer. This turned out to be a huge mistake because I noticed a severe loss in performance afterwards. So, I decided that I would flash the old BIOS I had by using the tool provided by Lenovo which can be found here. However, it...