SPH-L720 Diag mode not working - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

Hey guys need help getting my phone to connect to PC in diag mode.
My phone will enter diag mode (thru the ##3424#) but my computer won't detect it as a port (in device manager)
I verified that it wasn't the USB cable or my drivers by connecting another phone in diag mode (s3)
Any assistance would be appreciated.
ps I tried the 9090 trick no luck

Related

Mogul don't connect to PC in DIAG mode (##3424#)

Please, help
I can't get Mogul to connect to PC in DIAG mode (##3424#)
I put it in DIAG mode (##3424#) a screen saying DMR v 1.87 pops up. Then I connect it to PC, but PC don't see Mogul as hardware. In ActiveSYNC mode I connect Mogul with no problem. A few weeks ago everything was Ok. I was able to connect it in in DIAG mode and work with QPST.

Connecting problem?

hello! I need some help to my phone,after i rooted to eclair 2.1v,my computer don't recognize my phone anymore,I set to usb debugging mode before to connect to my computer still can connect.My phone model SG3 I5800L,I try to use samsung kies,it's say unable to connect I5800L pls help. I want to unlock my phone.
try with "driver recovery" option in kies b4 u connect phone to usb cable...
Go to your dial and type: *#7284# then set both dots on pda. It'll work!
ok i'll try,thnks for your reply

[Q] Help can't access diag mode LG G2 D803

I can't get into DIAG mode when I enter ##3424# (##DIAG#). Is there a different sequence for the D803 model? Or is there a manual way of getting this device into diagnostics mode?
I have all the drivers downloaded and device manager shows under Android USB Devices AndroidNet Sooner Single ADB Interface)
and under Ports shows LGE AndroidNet USB Serial Port (COM8) which is exactly what I want just can't seem to get DIAG mode to work.
Thanks in advance for any help.

[Q] SPH-L720 Diag mode not working

Hey guys need help getting my phone to connect to PC in diag mode.
My phone will enter diag mode (thru the ##3424#) but my computer won't detect it as a port (in device manager)
I verified that it wasn't the USB cable or my drivers by connecting another phone in diag mode (s3)
Any assistance would be appreciated.
ps I tried the 9090 trick no luck

Qualcomm QPST Driver to access USB as COM

I'm trying to connect to my device using QPST, but the device is not showing up in the COM ports. I've tried to delete all the usb devices related to the device in device manager but all to no avail. And none of the dial codes I'm using seem to be working. Only ones that work are those that start with "*#*#" and end with "#*#*". Only com port I get is the default COM1, to which there is no phone connected. The other problem is that the drivers I have doesnt seem to be working, I even had to install them by disabling hardware signing. Device is not detected in download or recovery mode either.
Processor is a MSM8212 and the mainboard is MSM8610.
I'm on windows 8.1
Your device is in regular mode... to access DM you HAVE to have it in DM mode.... so try EFSpro to switch your phone into DM mode or you will have to keep looking for a dial pad code. Some handsets allow sysfs to enable DM mode too. Have a look and do some research. Your QPST drivers should come from the manufacturer... ie I am using samsung drivers to use the DM port, not drivers from QPST.

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