Benefit of breed is basically an unbrickable router. Holding reset button and powering on gives a web interface onto which you can flash new firmware.
There's also overclocking capability. All of my Archer C7 routers for example are overclocked to 1GHz.
It basically offers a web based recovery, like some MT7621 D-Link devices (DIR-878, DIR-860L) have by default. My ZyXEL XGS1250-12 has a web based recovery as well I noticed. I have replaced the crappy TP-Link bootloader on my Archer C5 v1 as well e.g. No more fiddling with TFTP servers and scratching your head why the recovery doesn't like the images you're offering and whatnot.
The catch is you need to know
the reset GPIO your device uses
(you can check the DTS for that). The BREED binaries are built for specific models, but if your device uses the same GPIO for reset, you can replace your OEM bootloader with that specific BREED build, if they share the same GPIO for reset. I see the R6220 even has a specific build for it, so that makes it even easier.
Fwiw, here are the BREED Recovery Console translations if you're not using the Chrome translator (e.g. I used Firefox). At least this is from my C7v2; my R6220 is at the in-laws house.
Breed Web:
恢复控制台 Recovery Console
系统信息 System Message
固件更新 Firmware Update
固件备份 Firmware Backup
频率设置 Frequency Settings
恢复出厂设置 Reset
LSDK/QSDK 设置 LSDK/QSDK Settings
TP-LINK 设置 TP-LINK Settings
环境变量编辑 Environment Variable Editor
环境变量设置 Environment Variable Settings
重启 Reboot
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