Try connecting the device while holding Volume Up , Volume Down , or both simultaneously to force it into the correct BROM mode.
For Xiaomi devices, MiFlashPro is a valuable tool. It has a dedicated "SP Flash" tab that integrates an MTK bypass, handling authentication and flashing in one streamlined process. sp flash tool status ext ram exception
When SP Flash Tool connects to your MediaTek (MTK) device, it attempts to initialize the device's external RAM (the physical RAM chips) to handle the data transfer for flashing the firmware. If the tool cannot communicate with the RAM properly—usually due to a driver timing out or the phone entering the wrong mode—it throws this exception. Try connecting the device while holding Volume Up
If you are getting the Ext RAM exception on Download Only , try switching to Firmware Upgrade . This forces the tool to strictly validate partition layouts before initializing memory structures. When SP Flash Tool connects to your MediaTek
: Hold the appropriate boot keys (usually Volume Up, Volume Down, or both) while connecting to the PC.