Been using the Eken M001 for a few weeks now. Generally pleased with what it can do. recently upgraded to 1.7.4. (Official). Today, the screen froze/controls locked. I waited for the machine to run down the battery. I switched it on again, and after a while the same thing happened again. Any idea as to what the problem may be? Are there any problems with the new upgrade/firmware? Any tips as to how to resolve without waiting for the batteries to run out each tinme so that I can re-boot?I also notice that the machine seems to take slightly longer than before the 1.7.4 upgrade to boot up.