i am not responsible for damaged devices though this may not happen warning Please make backup of system after installing recovery MTK tools for some odd reason due to lack of proper drivers wont detect ur phone
Hello to all BLU vivo iv users this thread is for gaining root access after updating your blu vivo iv to 4.4.2 usually it can't be rooted properly u can get root via recovery install method but root explorer and other root apps will not get proper su access but it won't work or will fail constantly to complete system operations meaning u can't edit system at all!!!
I made an insecure boot.img with more adb access seeing that it does not have much developer options in settings it still wont but this boot img will allow proper root.
first u must install Carliv recovery from here not my work this is for Gionee elife s5.5 but vivo iv is same device so it's safe tested myself :http://elifes55.blogspot.com/2014/07...-required.html
use mobile uncle from market and update recovery choose recovery.img first item at top of the list the downloaded recovery img must be in base of internal storage do not place in any folders!!!
after that reboot to recovery vol up + power scroll with vol keys power to select scrool to install zip then scroll down to install from internal sdcard choose "bootimgADB.zip" wait for install to finish wipe dalvik and cache (ps when doing this it takes about a min or two idk why just dont panic and think your phone is stuck)
after that procedure continue to rooting using Vroot / root genius
Root genius: http://www.shuame.com/en/root/
download root checker from market to check for root
Just picked one of these phones up and i love it wish there was more development for it but im glad for the few people that made this thread at least we have a way to root and unbrick. The kango root method the guy on page 2 posted works perfect. I see no reason to do all the other stuff thats mentioned in the begining of this post. Plus kango root is one click root and one clik unroot so if blu does release updates you can unroot real quick,do your update then re root again. Once you install a custom recovery you would have to re flash the firmware in order to do a update and in my opinion that would suck seeing as there is no custom roms or kernels to flash for this phone so i see no reason for installing a custom recovery.