Amazfit Watch faces

Hi. I wanna put my custom qr codes for the business cards app made by humaid.
I know how to convert the images to the gt3 format, but i dont know how to make the bin. I first extract it, change some text in a .js file and put my custom qr code as barcode1.png but then i dont know how to make those files a .bin again and i cannot use mt manager cause every download link has virus. I also don't know what app else could i use. Could someone help me?

Just put Al those files to a folder and convert it's name to business cards.bin easy as that if you are still facing errors so let me know with some screen shots as it would help me to understand more effectively