In the restore menu above where it shows the available backups press on the line that starts with storage. It will bring up a sub menu that let's you choose which SD card. There is a much larger learning curve with TWRP versus CWM.Yeah i was having some issues last night with my SD card. I made a backup with online nandroid backup and saved to external SD but my restore menu only shows those on the internal and i can't find a way to make it look on the external SD for a backup.
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