How can I upgrade from 64GB to 128GB with my current data and configuration (using Luma)

You just need to format the 128GB microSD cars to FAT32 and copy the content over to it from the 64GB. I recommend using the PC first to format it and then using GM9 to really make sure it’s properly formatted.

 

It is actually simple, just format the 128 GB card as Fat32 otherwise it will not work and then just copy all the data from the 64 GB to your new one. There is no need to any additional things as it is a simple process. It is better to use a PC as I doubt you can format with GM9 as its firm is located on the SD.

 

I've honestly had issues with the past and found formatting my microSD cards with my PC has always been a hassle for me. Some people have done it without any hassle and there are plenty of guides out there for it. I just found it easier to format it to FAT32 via PC and then format it with GM9 to make sure I have it properly formatted. It's not really necessary, it's just something I found helpful for me.