Assuming the phone can only boot till MIUI logo then it restarts, this means the phone is already hard bricked. You have no choice but to reload the fastboot firmware. I’ve read through many tutorials and found them not useful. Through trial and error, I managed to figure out the specific steps to recover a bricked Redmi 1W.
You need to know this information: Redmi 1W uses the MediaTek 6589T chip.
You will need to download 1. SP Flash Tool version 5.1724 or earlier 2. MIUI Recovery Rom from Xiaomi 3. MediaTek Windows Drivers.
Step 1: Install the MediaTek Windows Drivers
Step 2: Unrar the MIUI Recovery Rom file, we need one file called the scatter textfile. The scatter text file lists all the addresses of peripherals of the phone.
Step3: Extract and execute SP Flash Tool version 5.1724 or earlier as the newer versions will not accept the scatter file. You need to indicate the location of the MIUI rom and the scatter file in the SP Flash Tool application. Select “Format all + Download”. Press the Download button on the top and proceed to the next step.
Step4: Remove battery from the bricked phone for 5 seconds, then replace it. Connect the USB cable to the phone’s USB port and to the laptop. Press down on the Volume – button and hold. The SP Flash Tool will start to recognise the phone and proceed with format and download of the fastboot recovery.
Step5. After sometime, the phone will automatically reboot and the MIUI rom will reappear.
Note the serial number of the Redmi 1W is now replaced with 0123456789A.