HELP! COCCI CO-F6 - MT6577

[wskizz]

HI ALL ANDROID MASTERS.
TIME AGO I BOUGHT BY ALIEXPRESS - COCCI CO-F6 ANDROID PHONE.

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I TRY MANY TIMES, MANY SOFTWARE TO MAKE ROOT WITHOUT ANY RESULT. I FIND MTK DROID TOOLS AND HAVE THAT INFO:

Hardware : MT6577 (MT6589 is Fake!)
Model : signal77_cu_jb
Build number : ALPS.JB.MP.V1.6
Build date UTC : 20130115-141400
Android v : 4.2.1
Baseband v: MAUI.11AMD.W12.22.SP.V19.P4, 2013/01/08 17:05
Kernel v : 3.4.0 (liuyongchao@signaltech-desktop) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #1 SMP Tue Jan 15 22:02:14 CST 2013

I TRY TO FIND MANUFACTURER FOR HELP TO UPGARDE MY PHONE AND MAKE BETTER MY GPS WORKING (ALL TIME I SEE ONE SATELLITE OR NOTHING). HAVING THAT INFO ON TOP CAN YOU HELP ME FIND SOMETHING BETTER FOR MY PHONE? IS THERE ANY ALTERNATIVE FIRMWARE FROM OTHER PHONE?

THANK YOU IN ADVANCE