Copying .img File to Micro SD-Card
Requirements:
A Micro SD-card.
A computer with an SD card reader.
If your computer only has a standard sized SD card slot then you will need an SD card adapter.
If the computer does not have an SD card reader at all then you will need an external SD card reader that connects via USB.
A Windows computer.
If you do not have a Windows computer you can use a Virtual Machine with Windows.
Alternatively, you can use different software compatible with Linux or Mac OS.
PhoenixCard utility (or alternative for your Operating System).
Available here:
Preparing the Micro SD-card:
Insert the MicroSD card into the SD card reader.
Go to “Computer”, or “This PC” and locate the MicroSD card.
Backup any files on this SD card that you wish to keep as this process will format the SD card.
Download the firmware .img file to a directory that is easily accessible, like the desktop.
Download PhoenixCard (link above)
Extract the zip folder to a directory that is easily accessible.
Start the PhoenixCard application.
Click “DiskCheck” and choose the drive that is the SD card.
Click “Img File” and choose the firmware image.
Set Write Mode to “Product”.
Click “Burn”.
Once the burning process has finished, eject the SD card from the computer.