Late-last year, many folks reported of a software issue where the Huawei Nexus 6P entered a bootloop stage where the device wouldn't proceed past the "Google" Logo upon firing up the device. Not even factory resetting the device would fix the issue. An unofficial fix has come from XDA members: XCnathan32 and rchtk. The fix required you to download and flash a few modified system image files which circumvent the bootloop by disabling the larger CPU cluster. For some reason (which is still unknown), the larger CPU cluster isn't let the phone function properly, so the modified boot.img file...
Source: http://www.gsmarena.com/if_you_have_a_bootlooping_nexus_6p_theres_finally_a_fix-news-26363.php
