USB OTG not working

[vinaysharma76]

On my Z4 I have flashed latest firmware 12/21/2015 but its OTG is not working no devices can be detected if I use OTG cable. Same cable works on other android mobile. Does someone face similar issues. Also USB host port issue I am facing my portable HDD many times are not detected on both USB host ports.

[mo123]

On my Z4 I have flashed latest firmware 12/21/2015 but its OTG is not working no devices can be detected if I use OTG cable. Same cable works on other android mobile. Does someone face similar issues. Also USB host port issue I am facing my portable HDD many times are not detected on both USB host ports.

Then you flashed incorrect firmware for your device without OTG drivers.
Also can you flash firmware from the future?

[vinaysharma76]

I flashed rk3368_5.1_Z4_ap6335_zhongxing_20151121.zip from http://4pda.ru/forum/index.php?s=&sh...ost&p=44789506 . If this is not the latest ROm for Z4 what can you help where can I find the latest ROM for Z4. Factory ROM also had power shortage issues for my portable external HDDs in both Host USB ports. I am using Buffalo MiniStation 1TB Portable hdd in my case.

Everything else except OTG and host USB poer for HDD works very well. Camera / game controller works fine with USB.

[vinaysharma76]

My OTG cable is also not working even in boot loader mode Could it be a hardware issue?

[privet]

On my Z4 I have flashed latest firmware 12/21/2015 but its OTG is not working no devices can be detected if I use OTG cable. Same cable works on other android mobile. Does someone face similar issues. Also USB host port issue I am facing my portable HDD many times are not detected on both USB host ports.

where did you get this firmware ?

[vinaysharma76]

I flashed rk3368_5.1_Z4_ap6335_zhongxing_20151121.zip from http://4pda.ru/forum/index.php?s=&sh...ost&p=44789506 .

[vinaysharma76]

Finally I figured out the problem. It was the setting under USB settings . if you select connect to computer check box. USB OTG can not detect any other device. if you un check it will work properly. But Still canot figur out how to get enough power for 2.5 inch USB portable HDD when connecting to USB host ports or OTG. these are not getting detected intermittently. Also can not make USB camera mic working so far.

[Roland Deschan]

So vinaysharma76 , how is the new rom? Unified space, etc. ? Kodi version?

[vinaysharma76]

Working very smooth i will provide more details of ROM no issues at all except i couldn't get any mic working on this TV box so far. i tried bluetooth headset, Webcam with mic, and USB headset but nothing seems worked so far.

KODI is 15.2

[Roland Deschan]

Right. Thanks. Please give detailed installation instructions for all who are using Z4 RK3368 TV Box. Including ROM, recovery, tools, links etc.

[vinaysharma76]

I will for sure. Just not getting enough time for documenting it. thanks.