Last year we heard reports that some Nexus 6P owners were reporting that their phones were stuck in a bootloop, which effectively rendered them useless. This has resulted in lawsuits being considered, and until now an actual fix for the problem has yet to be released by Google or Huawei.
Thankfully the Android community has rallied together and for now, it seems like a fix has been found. However this fix does come at a cost in terms of performance as it essentially disables four of the cores on the Qualcomm Snapdragon 810 chipset, which means that in some instances, especially with more intensive applications, you will notice some lag.
So far based on the feedback given for the fix, many users are reporting that it is successful and that previously bricked Nexus 6P devices are now back up and running. The instructions on how to go about fixing your Nexus 6P can be found on the XDA forums, posted courtesy of XDA member XCnathan32. Whether or not this fix will work for all users remains to be seen, but like we said so far it appears to be successful.
That being said, the Nexus 6P is kind of old by now and presumably users with the problematic phones have either swapped them for a new one or have kept them away. If it is the latter then perhaps this fix will allow you to use your Nexus 6P as a secondary device.