Recovery Mode not working, can't seem to flash over

Hey guys I need help. I tried to flash recovery yesterday but it doesn't work. I flashed my stock recovery with a cwm I found on the net. When I try to boot in recovery it shows the Blu logo and then black lines take over the screen and it reverts to rebooting normally. I'm trying to flash it over with a stock recovery through the two manager app and rashr app but no luck. Any ideas????
Using Blu vivo air lollipop

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