Now im using it.
I got the solution from here.:- https://forum.xda-developers.com/sho...2698813&page=1
i have huawei mate9 with Android version 7.0，try every method and not working also follow the advices so i have to post the screenshot..
and the contents of /etc/install-recovery.sh as follow
# init.d support
|app, init.d, stock kernel, terminal emulator|
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