ASUS RT-N16 (CPU BCM4718A1, RAM 128MiB, Flash 32MiB) - FreshTomato Firmware 2021.8 MIPS-R2 K26 USB AIO - NVRAM 32KB(Changelog)

FreshTomato: Downloads, Hardware (Routers) Compatibility, Firmware Feature matrix - MIPS, 3G 4G 5G USB Modem Dongle compatibility
OpenWrt: ASUS RT-N16, ASUS RT-N16 - Technical data, ASUS RT-N16 - Search Forum
DD-WRT: ASUS RT-N16, ASUS RT-N16 - JTAG, ASUS RT-N16 - Cooling mod(s), ASUS RT-N16 now supported - Forum, ASUS RT-N16 - Search Forum
Tomato by Shibby: Changelog, Changelog - old, Changelog - TechInfoDepot
AdvancedTomato: ASUS RT-N16, FAQ - How to set custom HTTPS Certificate?
Tomato USB: Use SSL certificate for WAN admin
Useful links: Всё про ASUS RT-N16 (All about ASUS RT-N16 - Russian), Tomato - Wikipedia, Tomato - TechInfoDepot
TechInfoDepot: ASUS RT-N16, ASUS RT-N16 - Hardware, ASUS RT-N16 - JTAG, ASUS RT-N16 - JTAG Mod, ASUS RT-N16 - USB to Serial TTL Mod, ASUS RT-N16 - USB to Serial TTL Mod #2, ASUS RT-N16 - Cooling Mod, ASUS RT-N16 - Search
Asuswrt-Merlin: 386/NG Changelog, Asuswrt-Merlin Add-ons
Asuswrt-Merlin 374 LTS: [Fork] Asuswrt-Merlin 374 LTS Overview