Purchased a new SD256GB card for my Boost Max 9520. Grayed out Mount step?

[AC Question]

I have no clue. I pulled out my standard 64 to install the 256 but the "Mount SD card is grayed out". Says "insert an SD card for mounting" and nothing happens. Hate to call Boost right now, thought I would get some WWInfo!
Thanks!

 

[B. Diddy]

Welcome to Android Central! The official specs say that it supports up to 64 GB. If you try to use one larger than that, there's no guarantee it'll work. The other possibility is that the card is defective or fake. Does it work in your computer?

 

[KfcMech]

It's so strange, now it just says 1.49 GB free. So ah, that answers that. I am returning it.

 

[KfcMech]

And thank you for this killer forum