Now Intel has rolled out a new Atom C2000 C0 stepping that should fix the AVR54 issue once and for all. Affected chips included the C2308, C2338, C2350, C2358, C2508, C2518, C2530, C2538, C2550, C2558, C2718, C2730, C2738, C2750 and C2758.
If you currently have a device with the Atom C2000 you should check the website of the manufacturer. The only solution is a hardware replacement but be aware that not all vendors are offering decent support for this issue.