The bootloader for OrangePi Zero Plus works reliably for this board.
Model has been discontinued by manufacturer
Consistently fails to find green0 during boot process - usable for 24/7 operation

Technical data

CPU: Allwinner H5 ARM Cortex-A53 Quad-Core
RAM: 512MB
Storage: 1 microSD card slot
2x Gigabit LAN one from SoC and one via USB2.0 (max 250mBit)
1x USB 2.0
1x 802.11 b/g/n Wifi

This is a 512MB Version which is not recommended.

You need at least IPFire 2.27 core165.

How to install IPFire

Download the latest aarch64 IPFire image, unpack the Image to a (Micro)SD Card:

xzcat ipfire-2.27.2gb-ext4.aarch64-full-core165.img.xz > /dev/mmcblk? 
#   (or /dev/sd? depends on you cardreader)

Mount the root filesystem (3 Partition) and go to usr/share/u-boot/orangepi_zero_plus folder and run:

dd if=u-boot-sunxi-with-spl.bin of=/dev/mmcblk? bs=1K seek=8

Mount the boot filesystem (1 Partition) and edit uENV.txt: