[Q] [Please Help!] Huawei G300 booting problem (signature image verification failed) - General Questions and Answers

Hi im new to the android world and im also new to this forum/website and im not too sure what to do or where to post so im sorry if im posting in the wrong section but i really badly need help!
I got the Huawei Ascend g300 off of my sister yesterday and she had sent it back to huawei via Vodafone (ireland) to get fixed because of numerous problems (Twice) .. she had just received it from vodafone (saying that there was a new motherboard and screen installed and that it was working perfectly.) she came home gave me the phone,
i turned it on and it worked fine for about 20 minutes.. then it froze and rebooted and again and again and hasnt stopped since.
Now its giving me a error screen saying signature image verification failed and also some error with my appboot/boot i really have no clue of what to do the phone is running android 4.0.. can someone please help me!?

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MODIFIED !!
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reymontes said:
hello. i recently got a lg stylo from a friend not knowing what update it was on. (6.0) i did king root and it worked fine for a few days until i shut down my phone.
now im stuck on a boot loop i cant get passed. i looked everywhere. is this bricked or soft bricked? can this be fixed from a guide on here? please i need some help.
i also get a
secure booting error!
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MODIFIED !!
message with every boot loop
Click to expand...
Click to collapse
This might work
http://forum.xda-developers.com/lg-g-stylo/how-to/official-boost-lg-g-stylo-unbrick-guide-t3215198
reymontes said:
hello. i recently got a lg stylo from a friend not knowing what update it was on. (6.0) i did king root and it worked fine for a few days until i shut down my phone.
now im stuck on a boot loop i cant get passed. i looked everywhere. is this bricked or soft bricked? can this be fixed from a guide on here? please i need some help.
i also get a
secure booting error!
error code : 1003
MODIFIED !!
message with every boot loop
Click to expand...
Click to collapse
if in warranty call lg dont mention root they gona fix

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