My nexus 9 (stock, locked) is suddenly acting very strangely. Freezes, restarts!! Reset doesn't seem to fix it.
What really surprised me was that during the freezes the CPU and RAM usage were NOT high. So the freezes are probably not caused by them.
I decided to do some searching in the logs to find out the cause of the freezes. All the freezes coincided with an iowait which means the CPU is waiting for the NAND storage to respond.
Going thru Google's nexus 9 support forum, I found that most of the failed updates (bricks) were due to the updater script finding unexpected data on system partition halfway thru the update which, on a stock system, means the filesystem has been corrupted!!!
This could be due to bad encryption, drivers, or hardware. In any case, its not looking good.
What really surprised me was that during the freezes the CPU and RAM usage were NOT high. So the freezes are probably not caused by them.
I decided to do some searching in the logs to find out the cause of the freezes. All the freezes coincided with an iowait which means the CPU is waiting for the NAND storage to respond.
Going thru Google's nexus 9 support forum, I found that most of the failed updates (bricks) were due to the updater script finding unexpected data on system partition halfway thru the update which, on a stock system, means the filesystem has been corrupted!!!
This could be due to bad encryption, drivers, or hardware. In any case, its not looking good.
![[Q] Nexus won't upgrade to 5.0.2 using System Update topic](http://lh3.ggpht.com/--Z8SVBQZ4X8/TdDxPVMl_sI/AAAAAAAAAAA/jhAgjCpZtRQ/no-image.png)
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