I have tried very hard to get USB Diag mode to work, but haven't managed to find a way.
Things I've tried:
echo 1 > /sys/devices/platform/lg_diag_cmd/diag_enable
Looking through the hidden menu for USB diag
Whatever I do, I don't get the diag device in Windows Device Manager, and can't connect with QPST and friends.
So if anyone knows a way, I'd be grateful! I want to enable Band 12 and AWS on my H815.
in the hidden menu (2776434#*#) scroll to bottom to Port Test check (very last thing on T-MO version), on the next screen touch to enable it. Plug it in and it should be enabled, thats I did it on my T-MO version
FWIW, it is "277634#*#" on my T-Mobile LG G4
I hope this video help you to enter qualcomm diag mode https://www.youtube.com/watch?v=DGCU9oDu43g, personally I had the wrong drivers installed, make sure you have usb tethering enabled, usb debugging and port enabled too!, If you are on an aosp may not work. You can found drivers in this video https://www.youtube.com/watch?v=Vh52x5_1FMg
Related
Hi
Question
Why wouldn't an Epic Touch get assign a COM port ?
I have all the drivers and I can see it in My Computer and in Device Manager / Portable Devices / as SPH-D710
btw I have another epic touch which does display as "SAMSUNG Mobile Modem Diagnostic Serial Port (WDM)"
is there something that needs to be enabled for the phone to be recognized as ^^^above^^
Thanks
Killtac said:
Hi
Question
Why wouldn't an Epic Touch get assign a COM port ?
I have all the drivers and I can see it in My Computer and in Device Manager / Portable Devices / as SPH-D710
btw I have another epic touch which does display as "SAMSUNG Mobile Modem Diagnostic Serial Port (WDM)"
is there something that needs to be enabled for the phone to be recognized as ^^^above^^
Thanks
Click to expand...
Click to collapse
In what application are you trying to get it to show up on? or is it just windows?
If you are running a 'one-click' or any Odin, make sure you 'run as administrator'.
Also if using adb or some other cli tool check that you have USB Debugging enabled under Developers options
leaderbuilder said:
In what application are you trying to get it to show up on? or is it just windows?
If you are running a 'one-click' or any Odin, make sure you 'run as administrator'.
Also if using adb or some other cli tool check that you have USB Debugging enabled under Developers options
Click to expand...
Click to collapse
Just windoes, Windows Vista Enterprise x64 to be exact
Phone is stock...factory reset it just before I made my post. Just to try I also enabled USB debugging but it still didn't get a COM port assigned
Killtac said:
Just windoes, Windows Vista Enterprise x64 to be exact
Phone is stock...factory reset it just before I made my post. Just to try I also enabled USB debugging but it still didn't get a COM port assigned
Click to expand...
Click to collapse
If you haven't already try another USB cable and different ports on the PC. I can't tell you how many times I've had a cable that had previously been good NOT work. I've spent hours trying to get phones, printers and other devices installed when all I had to do was grab a brand new high quality cable.
Also, I'd recommend un-installing ANY and all Samsung drivers - make sure you 'show hidden devices' in device manager! then reboot.
And then re-install them. They're here.
Then Power down phone
Wait for capacitative button lights to turn off
Simultaneously Press and Hold [Power] [VolDn] until confirmation screen appears
Press [VolUp] to enter Download mode.
Then plug it into the PC.
Good luck
Thanks for the help it deff helped me rule out a couple of things, but i noticed that on the modem section of device manager one phone was listed and the other one was not...looking at that helped me resolve the issue
here is the fix if anyone else is having the same issue
dial ##8778#
You should get a menu titled USB containing 3 options AP CP ALL
ALL has to be checked
http://forum.xda-developers.com/showthread.php?t=1626638
btw is there a repository containing all the ##XXXX# codes, and what are these called?
Here's one There are others just have to search for 'em. I can't find my other bookmarks.
Thanks for the info.
So I am not able to connect my phone to the PC.
The phone charges and the drivers work fine, but it is not recognized. I tried using my friends phone which is exactly the same and it worked fine.
After doing some research I found that the USB settings are not available from the drop menu, and for some reason they are not available in the settings under storage.
I also found that some people change settings with this code *#7284# , but I wasn't able to use it as secret codes do not work on verizon phones.
Any one that could help me please?
May not help but ...
Does ##366633# work? (Then pick 'Disable DM Mode' )
I need help getting my phone into the correct mode to be recognized by Windows as a Diagnostic PORT, so the phone registers in QPST.
The phone works for ADB and storage in charging mode and MTP mode, respectively.
However, the phone is not detected at all when i choose RNDIS mode, which I understand is the necessary setting to configure a diagnostic port for QPST.
- I have also tried booting in BP TOOLS from fastboot, same results.
Motorola Device Manager is installed, phone is XT1676 3GB/16GB running LineageOS 14.1 with superuser, TWRP.
did uh find any solution bruh same problem is goin on with me !!!???
Wonder if it is only my reme! Unlocked boot-loader. Ver: RMX2081_11_A_41. Not checked on 33 or39.
1. Enable USB Debugging - connect to PC - Select usb connection only for charging device - Debug option goes off.
2. Enable USB Debugging - connect to PC - Select usb connection for "transfer files" - Debug option stays on.
3. Connect to PC with USB debugging on and select "transfer files" - pull down QS and tap to select usb connect is only for charging - Debugging forced off in dev options settings.
Is it something implemented in Android 10? Never had a device with stock Q ROM. Used only custom Q ROMs on earlier devices and not exposed to this implementation if it is so! Did not want to upload a screen record of the same as it is about ~11 MB.
Can someone please throw some light on this and how USB debugging option has to be tied to USB connect choices - if it happens on anyone's device? And thanks in advance.
I have read this - https://www.realme.com/in/support/kw/doc/FAQ1114 though it is an older one but still not able to figure out the relationship when USB transfer files can exist without dev options but not the other way around.
At OxygenOS 12 adb works only in file transfer mode. If I won't enable it, adb devices lists nothing.
Is it bug? Or maybe there's some kind of option switch for it? Didn't find anything in developer settings so far...
Edit: I've just discovered that if I'm connected to adb (debugging enagled, authorized, usb in file transfer mode) and then change mode to charging only, then usb debugging is disabling completely in developer settings.
And I can't use adb in fastboot/recovery mode.
Yes it is true u cant usb in charger-only mode
Because there is written already "Charger-Only"