I built OpenWrt v19.07.6 with Asterisk, and Build was successful. However, when I am trying to install this OS on My MiniBox-V3, I am getting a hardware ID mismatch error. In my old build system, I can see there is a patch file specific to "MiniBox-v3-32M" , which actually generates "openwrt-ar71xx-generic-minibox-v3-32M-squashfs-sysupgrade.bin", but the OS that is generated in the latest build is openwrt-ar71xx-generic-minibox-v3-squashfs-sysupgrade.bin. I tried manually updating these patch files to OpenWrt V19.07.6, but It's not possible as many files and contents are changed. 
Please find the patch files: https://controlc.com/9dc576d4 https://controlc.com/72570b15
Please help me on how can I apply this patch to the latest version, or where can I get these patch specific to GainStrong MiniBox-v3 with 32MB flash.