v1.5

Raspberry Pi 4 UEFI Firmware v1.5

• Fix a bug in 3 GB RAM Limit for 1 GB and 2 GB Raspberry Pi 4 models [tianocore/edk2-platforms@d1406c6]
• Report effective memory being used in UEFI setup [tianocore/edk2-platforms@28d2f4e]
• Reclaim some unused memory back [tianocore/edk2@d6607d8 and tianocore/edk2-platforms@91ed4f9]
• Fix use of external .dtb's [tianocore/edk2-platforms@828fcbf]

Be mindful that the Device Tree addresses in config.txt have changed with this release of the firmware, so make sure to update any device_tree_address= and device_tree_end= lines in your config.txt to use the new addresses (0x1f0000 and 0x200000 respectively) if you don't use the one from the release archive.