@armor, re TFT Display with Custom Fonts, you said that you are having problems building. This will not be related to this post which is about an SPI issue with
DeviceOS 1.5.0-rc.1 and rc.2.
My guess is that if you do get it to successfully compile under DeviceOS 1.5.0-rc.1 and rc.2, you will then get SPI runtime issues noted in this and other posts.