I’m sure you can find software ( like this oneĀ Fat32Formatter , use google ) to format any hhd in fat32, but fat 32 means no files bigger than 4 GO…..
Maybe you can try the img in the page#2 , you will be abble to use your touch screen in the recovery mode
EDIT : if you copy the img in your device, using this : https://play.google.com/store/apps/details?id=de.mkrtchyan.recoverytools&hl=fr it’s possible to open recovery from your tablet, without PC
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