droidxpert Unfortunately, redmi 3s is one of xiaomi devices which not supported to change the emmc just like regular qualcomm devices. The SoC and eMCP is use paired key that store in RPMB, and the key must be match. If the "key" is not match, than device will stuck in mi logo and bootloop. In other words, not possible to replace or upgrade the eMCP without change the SoC too.
