Do not rename the files. They must have identical names except for the part number (e.g., ...part01.rar , ...part02.rar , ...part03.rar ).

If you do not process all parts of a split archive correctly, the firmware file will corrupt and fail to install. 🛠️ Step 1: Downloading All Required Parts

Download and install a legitimate extraction tool like WinRAR or 7-Zip .

Once complete, you will typically see a single file ending in (e.g., allupgrade_ms338_...bin ). 💾 Step 3: Preparing the USB Flash Drive