VSD220 Boot Loop Fix? - General Questions and Answers

My "smart display" was working fine, but when I tried to update the system, I got the error message that it couldn't connect to the network. WiFi was connected, so I contacted ViewSonic tech support. They said to connect the tablet to my router with an ethernet cable. I connected the ethernet cable and turned the unit on, and now it can't get past the boot screen.
Tech support says I'll have to return it since there's no way to do a factory reset. I'd rather try to fix it myself before doing that, but I don't know where to start since I don't really know what's wrong. The tablet shows up as a mobile device when connected by USB to my PC, but the OMAP driver is missing.
Any suggestions?

Related

Connecting Usb with USB Debugging enabled causing bootloop

Having a strange issue that I am not quite sure why is happening. I've been having a heck of a time attempting to access SD card with USB, as when I would connect it to my Windows Vista 64 Bit system the USB would constantly connect and disconnect, or my phone would simply never recognize that the USB was connected, or in more recent cases it simply goes into a boot loop or loads into the boot loader. On a hunch I decided to disable USB debugging and no more issues, except for I can't use adb obviously. I have been using my computer to customize my kindle fire, I wonder if that has something to do with it, perhaps the USB driver for adb is causing the issue? Has anyone else seen this issue? Solution? Thanks.
Update: I've come to the conclusion that there is a bad connection. I found that if I take the back cover off and connect the USB to the computer, it would work fine, but if I put any pressure on the battery it would disconnect and reconnect once the pressure was removed. I went ahead and sent out for a warranty replacement.

[Q] Tethering / driver problem N5 vs Win 8

Hi all
I've had my N5 a couple of weeks now, and it's working nicely, except for getting bluetooth and USB tethering to work smoothly. I wonder if anyone has any suggestions?
I can connect the phone to my laptop via USB (I'm running W8 x64, for my sins), and use MTP and PTP without a problem. Selecting USB tethering results in the phone saying "tethered", but nothing appearing in the list of network adapters.
I can pair the phone with the laptop, but the only services that seem to be offered are file-transfer and audio stuff.
If I enable USB debugging, the network shows on the laptop, and seems to work OK for a while. Sometimes the phone wants to reboot while doing this (typically after a couple of minutes).
Interestingly, Device Manager shows the phone as a Nexus 5 under the 'Other Devices' category only when USB debugging is enabled, otherwise it displays as 'ADB Device' only if 'PTP' is selected, and the phone is absent when 'MTP' is selected.
I'm guessing that this is a driver issue of some sort (I hate Windows), and have had a go at installing the LG United driver, to no avail. Any pointers gratefully received.
Cheers
Charlie
I'm having issues tethering with Windows 8, both wifi hotspot and USB tethering. I can connect and it will show up as internet connected then just die. Connection even goes on my phone.
However when USB tethering with OS X all I had to do was download a package from here http://joshuawise.com/horndis, after that it pops up straight away and I don't have any problems. Can tether for ages no problems.
Will probably try a custom rom soon see if it is to do with the Nexus 5 stock rom.
Hi Charlie,
I'm having the very same problem. With my Galaxy S3, I would tether (via BT, as it was a fast connection that didn't drain my battery like WiFi hotspot!) all day long with a Win8 ultrabook. Worked brilliantly!
Just picked up a Nexus 5 last night. My Nexus 7 tablet can use the phone's internet no problem, but my Win8 machine gives no such options. All I have is a "direct connection" service visible to the laptop, I suppose for file sharing.
Has anyone made any progress on this issue at all? It seems that the problem lies with Windows8. It boggles my mind why the Nexus 5's BT tethering implementation is so different than the GS3's...
Progress report: it seems I have tethering over BT working!
I've tried a bunch of different things... the challenge now, is to figure out what it was that worked...
I would try this first: remove the Bluetooth pairing between your PC and your Nexus 5. Ensure that "Bluetooth Tethering" is indeed checked in "Tethering and Portable Hotspot" menu (under Android settings) BEFORE pairing. That might be what I did wrong, in fact.
I restarted my PC, and voila, when right-clicking on the phone pairing on my PC, under the "Connect" menu, suddenly there's an "Access Point" service visible.
I'm pretty confident the above might fix you up.
[PS: If not, the only other thing I did differently when I first tried, was I paired the phone through Win8's buried bluetooth devices menu (avoiding the alternative MetroUI interface at all costs, as I normally do). I don't see any reason why using either UI should provide different results, but hey.]

[Q] MTP/PTP Connection problem

Guys, I have some problem with my Note II, the MTP/PTP function stopped suddenly like 2 days ago. When I connect to PC, the phone doesn't pop-up let me to choose USB connection mode, and in PC it just showed up as 7 CDC's in device manager, this is weird, I am sure that I have the correct drivers installed. Before that my phone keeps pop-up that dock is connected, but I doesn't own a dock though. So I guess it is USB flex cable is faulty, I replaced it and still having the same results. Charging, USB OTG, ODIN mode works fine though, just I am unable to connect my phone to PC. HDMI out I don't know because I don't have the cable. When I ask the shop they said there probably is something fried on the mainboard IC. Is it true? MTP mode is quite important to me man... Tried other kernel like AGNi and select UMS mode also not working, previously it is working though. My phone is out of warranty, and the Knox warranty also voided. Should I sent to Samsung SC? If no go I might change to OnePlus One.
Now I am on stock ROM also not working. :crying:
did you try updating the drivers
through windows automatic updates?
or did you try with win7 or win8 or linux?
Xp has always troubled me with incorrect or missing drivers

OPO no USB functionality

I've had my OPO for a little over 7 months now. My issue began when I had my desktop at a friend's house and plugged my phone into a USB 3.0 port to grab some videos off the phone when the phone suddenly shut off and would not turn back on. I thought it was bricked somehow but after leaving it plugged into a USB 2.0 port for some time, the charging screen came on and I was able to turn the phone on, but since then both OTG and MTP/PTP transfer doesn't work. If/when the phone is plugged into a computer, it gives an error and Device Manager shows
"Port_#0001.Hub_#0004 Unknown USB Device (Port Reset Failed)" and I'm not only able to charge the phone with one out the dozens of micro usb cables I have. I've tried several cables and a handful of different computers and OSs (Windows 7,8,8.1,10, Ubuntu 15.04, Kali Linux) all to the same result.
I'm running COS 12.1-YOG4PAS3JL, rooted, and have TWRP installed. The phone doesn't show up when in Fastboot mode or the bootloader either. Nothing changes when I disable or enable USB Debugging as well. With DriveDroid if I set the USB system to "Standard Android" the phone reboots and that seems like the closest I've been able to get to any kind of progress. I've gone through unbricking threads as well as Googled until my fingers bled but I'm yet to find anyone with a similar situation where the phone isn't bricked, the micro usb port isn't broken, I can't pick between MTP or PTP mode (USB Connection just says USB is now disconnected), and I'm not running a custom ROM. I tried replacing the micro usb on the phone so I now know that it wasn't that that's been messed up but I'm not sure where to go from here. Any suggestions or help is greatly appreciated.

Pdanet ver.5 issues

Let me 1st of apologize if this isn't the correct place to post this. I seldom do this.
I'm a paid user of pdanet tool & really haven't had any problems using ver.4 but when it updated to the latest ver.5.10.3 I have been having nothing but problems staying connected. At present I'm using via Bluetooth which was disconnecting too but seems ok at this time. I have always used either USB tethering or more recently WI-fi direct. My reason for switching to WI-fi direct is because my new phone, a asus zenfone zoom(zx551ml) instructions say not to charge with anything other than the charger-USB cable that came with it & when connecting in the past with my other phone the usb debug screen would list "use as USB charging only" so I'm a little concerned what might happen if I plug it in to the laptop.
Having said all that I find when I connect via WI-fi direct if it disconnects for any reason(which it does often) the phone WiFi connection fails & I also get a message on the PC saying "the network is busy try again later". I have reinstalled the software on the PC-forced closed it on the phone-nothing seems to work unless I restart the pc & phone. I'm not sure where to go or what to do.....any & all suggestions are GREATLY APPRECIATED.

Categories

Resources