Short installation guide: Installation by TWRP – Select “Install” – Install from an image – Choose an image – Select boot partition.
With this apps you can boot your Xiaomi Redmi 3S device with lower CPU settings and solve the overheating issues.
MultiROM V220.127.116.11 – boot_3s_055432.img
develop 6.8.5 – boot_redmi3s_685.img
develop 6.8.11 – boot_redmi3s_6811.img
V18.104.22.168.MALMIDE_20160712 + boot fix – boot_redmi3s_7580_fix.img
V22.214.171.124 + boot fix – boot_3s_7590_fix_low.7z