Some thoughts here:
I have S3 + Phils recovery and i can say at this moment, a lot of experience with that device...
Now, i have a Oppo7A international just rooted.
I been reading problems with recoverys an loops, and even not working with some rooms or even official rom backups..
My questions:
1 - Can i install this normally, without affecting my original rom from oppo?
2 - Can i install any other rom with no problems?
3 - (continuation of point 1) In case i did install a personal rom, can i use this recovery to return to a official oppo rom?
Yes i do now TWRP from S3, since i did use it for a time.
Thank you!