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[Q] Droid X Reboots everytime it connects to QXDM

My droid X reboots everytime I connect to QXDM.
I've put it in diag mode by holding down the camera button on boot, I've setup the connection through QPST by adding it through COM4 port. I can do Service Programming, but every time I connect it to QXDM it reboots, and doesn't stay in diag mode.
I've also tried through HW VSP to setup a virtual com port without diag mode, and yet it still reboots every time I try to connect to QXDM. (Also, I can't do QPST service programming through HW VSP.)
Anybody have an idea why this is? Do I have to root my phone to connect it to these programs?

I just told my mom I'm Special

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.

Asus Zenfone 3 ZE520KL - connect to QPST

Hello,
I would like to unlock Band 20 on my Tw Phone to be used in Europe.
THe Phone is successfully rooted and Superuser installed.
I have tried to connect my ZE520KL to PC with QPST and QXDM, because I would like to unlock the Band 20.
I have tried:
Device is rooted (follow this forum)
adb Shell / SU / setprop sys.usb.config diag,adb -> and confirmed the status is diag mode
Install Qualcomm USB driver (shown in Windows 10 Device Manager)
-> but QPST do not find any Phone or other USB device
Before this, I have also tried Signal Guru, which display Band 20, and I can lock it,
but the phone do not connect to any LTE band.
May I ask for any recommendations?
Is there any alternative way to unlock Band 20?
Thank you.

Take a look at this thread to start with.
I'm interested in this as well but haven't had any luck. From what I've read, it looks like its more than just nv values in 6828/6829 that block it from working, possibly hardware along with some other encrypted values that once you change seem to break all signal for the phone.

Hello, thankyou for the link.
I have tried it before without success.
Diag mode through adb works, but when i run the script to connect via the Qualcomm driver,
Adb closes (back to promt), but Qpst is still not finding any device.
Regarding Signal Guru: after root etc. I have installed signal guru, and the added Band 20, as it was not shown in original list. Now, when i lock phone to band 20 or lte only, the app tries to test but without any signal and then always immedeately switches to GSM back.
Any othe way i can try?

wang1chung said:
Take a look at this thread to start with.
I'm interested in this as well but haven't had any luck. From what I've read, it looks like its more than just nv values in 6828/6829 that block it from working, possibly hardware along with some other encrypted values that once you change seem to break all signal for the phone.
Click to expand...
Click to collapse
Hi Wang1Chung (Nihau
Did you try to install other custom rom, e.g. for Nougat (I am still using Marshmellow),
if this can help to solve to unlock Band 20?
I am still trying to connect my phone to QPST, one question here:
in the past, my Win10 Laptop detected the Zenfone3 as "other Device" and "USB Controller",
and today I installed one other driver (from Xiaomi Mi5) for Qualcomm, now the device manager
shows the phone at "Modems".
Does this mean, my Laptop sees the phone, and the driver works?
In this case I consider maybe by diag mode is not ok. -> How can I check diag mode is running?
I use ADB Shell with setprop, and in properties it shows "sys.usb.config diag,adb", therefore it should be in diag mode, right?
Is there any code I can put phone to diag mode (Just to verify it is not this issue)?
Thank you!

@Ser71MB1
I didn't try any other roms as there weren't many options when I tried.
I think Windows 10 is your issue. Try running Windows 7 32bit and force windows to use the driver that QPST can find that I mentioned in the previous thread. I think remember reading people had issues with getting QPST to work in windows 10.
From what I remember, with my phone plugged in to my computer, when I successfully enabled diag mode, my phone disconnected and then reconnected with a difference driver....is yours doing that?

Enabling Diagnostic Mode

I wanna enable the diagnostic mode and try to see if i can add more LTE bands through QPST. I tried the generic command through adb shell and its not working Any suggestions are welcome.

Go to Emergency Mode
Type- *#3424#
This will enable diag mode.

Try thr Hardware test Mode
There is a way to enable the harware test mode on Asus zenfome Max pro M!.
youtu.be??toXVB0e9Afo
remove ?? with /
IT should have an option to test the LTE band

ankitpatil2109 said:
Go to Emergency Mode
Type- *#3424#
This will enable diag mode.
Click to expand...
Click to collapse
Thanks but this did nothing for me. The phone has no SIM and the phone says emergency calls only. In the dialer though this code had no effect. the dialer just displayed it and sat there.
What am I missing? Thanks
---------- Post added at 04:47 PM ---------- Previous post was at 04:45 PM ----------
InverselyCrazy said:
There is a way to enable the harware test mode on Asus zenfome Max pro M!.
youtu.be??toXVB0e9Afo
remove ?? with /
IT should have an option to test the LTE band
Click to expand...
Click to collapse
Thanks for this. I looked at all the tests - which are cool. But I did not find any way to enter diag mode so I can try to use Qualcomm tools to unlock some more LTE bands. Am I missing something? Thanks

Iirc, a powered down (switched off) phone can be connected to PC with volume + and volume - buttons pressed simultaneously when connecting via USB to PC. Then PC device manager shows android device connected in diag mode (needs latest qualcomm drivers 2b installed in PC). I am not so sure whether windows need to be in test mode for this or not.

Cookie Ninja said:
Iirc, a powered down (switched off) phone can be connected to PC with volume + and volume - buttons pressed simultaneously when connecting via USB to PC. Then PC device manager shows android device connected in diag mode (needs latest qualcomm drivers 2b installed in PC). I am not so sure whether windows need to be in test mode for this or not.
Click to expand...
Click to collapse
Thanks for this. I tried using both vol+ and vol- with power button. I get a completely black screen. But I do see some 9008 drivers get loaded in Device Manager. When I open QPST a com port is automatically found and it says that the device is in download mode. I cannot really do anything at this point. I want to start service programming so I can edit the NV using QXDM so I can add an LTE band. But this attempt fails due to download mode. I don't know if this is akin to the download mode I have seen in my Samsung phones when I use ODIN to flash firmware. The only way I have found out of the black screen is to press vol+ and power which eventually takes me to fastboot mode on the device and from here I can press/hold power to reboot to the Android system.
I am not sure I have the latest drivers. Now that I have the device rooted, I was able to issue "setprop sys.usb.config diag,adb" and actually see my Windows 10 computer show a diagnostics 9091 com12 port and a modem 9091 on com11. The driver info shown for this in Device Manager is 2.1.1.2 dated 3/19/2014. With this I can actually use QPST to read something from the device. But when I try to use QXDM to read item 06828 (LTE bands) I get "NV Status Error Received: Item Inactive". No idea what that means or what is wrong. Working on my old Samsung Note3 was pretty simple compared to this.

with root
enable diag port :
adb devices
adb shell
su
setprop sys.usb.config rndis,diag,adb

anvesh583 said:
I wanna enable the diagnostic mode and try to see if i can add more LTE bands through QPST. I tried the generic command through adb shell and its not working Any suggestions are welcome.
Click to expand...
Click to collapse
Hey Bro Don;t Dont Worry I also have zenfone max pro m2 and i dont have root even Try This
1.Open CMD.
2.Connect Your DEVICE with USB DEBUGGING.
3.Type "adb devices".
4.In the phone pops up press "ALLOW".
5.Type"adb shell".
6.Type"setprop sys.usb.config ,diag,adb
7.Voila!! Connected
8.Please Check "DEVICE MANAGER"
9.Now Please "QFIL to SELECT YOUR DIAG PORT".

kamo84 said:
setprop sys.usb.config rndis,diag,adb
Click to expand...
Click to collapse
Ajay_Boss said:
Hey Bro Don;t Dont Worry I also have zenfone max pro m2 and i dont have root even Try This
1.Open CMD.
2.Connect Your DEVICE with USB DEBUGGING.
3.Type "adb devices".
4.In the phone pops up press "ALLOW".
5.Type"adb shell".
6.Type"setprop sys.usb.config ,diag,adb
7.Voila!! Connected
8.Please Check "DEVICE MANAGER"
9.Now Please "QFIL to SELECT YOUR DIAG PORT".
Click to expand...
Click to collapse
Guys, Any idea how to make these commands work on Android 11 ?
Both the codes do not trigger anything and does not show any new devices in device manager.

Phone reboots once in Diag Mode and Connected to PC (BP Tools)

I'm trying to do a QCN back up but one of the required steps is to enter the Diag Mode (via starting the phone under BP Tools).
I am using the Qfil desktop app to do this but the phone won't remain on long enough for the backup.
The Qualcomm drivers are installed and the device is being detected by the PC, it just reboots once the USB cable is connected. (stays on for 5-10 seconds max) It stays on indefinitely once no cable is connected.
I've tried different PCs, different drivers, and even radio version 2.10L with no success.
Haven't seen this same problem in other threads and would appreciate any help.

d_originaldappa said:
I'm trying to do a QCN back up but one of the required steps is to enter the Diag Mode (via starting the phone under BP Tools).
I am using the Qfil desktop app to do this but the phone won't remain on long enough for the backup.
The Qualcomm drivers are installed and the device is being detected by the PC, it just reboots once the USB cable is connected. (stays on for 5-10 seconds max) It stays on indefinitely once no cable is connected.
I've tried different PCs, different drivers, and even radio version 2.10L with no success.
Haven't seen this same problem in other threads and would appreciate any help.
Click to expand...
Click to collapse
Go to developer option and Enable USB Debugging. (I know it's a late reply but it will help for others )

Thanks, but this was enabled. Still isn't resolved. Can't put a sim in the phone.

d_originaldappa said:
Thanks, but this was enabled. Still isn't resolved. Can't put a sim in the phone.
Click to expand...
Click to collapse
mine fixed by enabling usb debugging. did you allow the pc to usb debugging ? I also can't also put the sim. no imei and baseband unknown. I'm still looking for someone to share their qcn backup