I discovered that the Gentouch78 has more than one version out. If you happen to purchase one of them with the 3.5mm headphone jack and the screen rotation feature working “out-of-the-box,” do NOT apply patches 1 to 3, no matter how tempting. Unfortunately, the backup of the firmware that I thought I’d made didn’t re-install properly. After installing patch 3, I found that the firmware my unit shipped with was actually newer. I haven’t been able to find the firmware anywhere, so now my Gentouch78 is actually less functional than it was when I received it.