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[Q] Problem with communication during GB update

Alrighty,
So I keep trying to update my g2x through LG but I continuously get an error message that says, "Problem with communication between cell phone and PC", and then it never goes past 4%. Yes, I've downloaded the proper drivers, and have followed the prompts of disconnecting the phone, removing the battery, powering back and pressing restart (countless times). None of it works though. And no, my phone isn't bricking up on the SW update, so that thread doesn't really help me.
I've been doing some research and it seems that it just doesn't work for some phones, but I'm wondering if anyone here has been able to successfully troubleshoot this.
Yeah, I'm one of the unfortunate ones that got a bad phone a while ago, so I'm hoping I can find a way to make it work...
Thanks in advance!!

I have had the same problem. I have a G2x that I got off ebay. It was un-moded, running stock Froyo 2.2.2. I went to the T-Mobile / LG update site and followed the steps. The program actually worked the first time, it went through the whole update procedure and said it was complete. The phone restarted, but when it restarted it no longer recognizes the SIM card and there is a question mark for the battery symbol. When I go into the settings, it does not show a baseband version. I have tried to re-install using the update program, but it stops after 36% saying "Problem with communication between cell phone and PC". Any ideas?

npo123 said:
Alrighty,
So I keep trying to update my g2x through LG but I continuously get an error message that says, "Problem with communication between cell phone and PC", and then it never goes past 4%. Yes, I've downloaded the proper drivers, and have followed the prompts of disconnecting the phone, removing the battery, powering back and pressing restart (countless times). None of it works though. And no, my phone isn't bricking up on the SW update, so that thread doesn't really help me.
I've been doing some research and it seems that it just doesn't work for some phones, but I'm wondering if anyone here has been able to successfully troubleshoot this.
Yeah, I'm one of the unfortunate ones that got a bad phone a while ago, so I'm hoping I can find a way to make it work...
Thanks in advance!!
Click to expand...
Click to collapse
Mine did this the first time. This is where the phone is never commanded to boot into S/W update mode so at least this is not a step where it can be bricked, as no update has actually occurred yet.
This is how I fixed it and got mine to update. Use a different USB port on your computer. Yes there are different as some are on internal hubs. The update must have a direct USB port with no hubs in between. I also reinstalled the drivers through the LG Update program and not from the LG website. When I did this and plugged in my phone about eight new devices were detected and installed as opposed to about two the first time around. Also, make sure your phone is in debug mode in Android application settings.
Then make sure you disable any anti-virus programs and turn off the Windows firewall. Then use ctrl-alt-delete and close down any programs running. Also go to the taskbar and click on the up arror (if Windows 7) and right click on each icon and see if you can close it down. Also, unplug all other USB devices (even a mouse if you don't need it) as they can interfere with communications between the updater program and your phone. The only USB device I left connected to my computer was the keyboard.
The LG Updater must be run in Admin mode. If when you run it you get a Windows warning asking you if it is ok for this program to make changes to your computer then it is launching in Admin mode. If not right click the LG Updater icon by clicking Start>All Program>LGMobile Support Tool>LGMobile update. Right click the last item and run it in admin mode. Again this is assuming you are running Windows 7. Admin mode is not necessary for Windows XP.
If all the drivers get loaded properly and you are not on a flakey USB port then at 4% the updater instructs the phone to reboot into S/W Update mode and that is where the real magic happens if you are lucky.

coreycollins3066 said:
I have had the same problem. I have a G2x that I got off ebay. It was un-moded, running stock Froyo 2.2.2. I went to the T-Mobile / LG update site and followed the steps. The program actually worked the first time, it went through the whole update procedure and said it was complete. The phone restarted, but when it restarted it no longer recognizes the SIM card and there is a question mark for the battery symbol. When I go into the settings, it does not show a baseband version. I have tried to re-install using the update program, but it stops after 36% saying "Problem with communication between cell phone and PC". Any ideas?
Click to expand...
Click to collapse
Use another USB port and try again. At various points in the update the updater resets the phones usb port and it has to reconnect. If it doesn't connect don't do a battery pull. Just try removing the USB cable and reinserting it. If you hear the computer beep wait a bit and then click restart on the updater. Hopefully it should see the device this time and continue the update.

New phone

I have just recieved the phone and its driving me nuts. When i switch the wifi on and then try to switch it off it says its switching off but stays like that for next 4 hours and wont switch off! Need to reatart the phone every time. Today battery was full at 10:30 and by 12 was 48% wifi off data off screen brightness at 50% bt off watched 1 minute of 3d video. When tried to dial a number it just stoped and nothing happend so had to restart it again. Its a factory lg handset without simlock or any branding on it. Yesterday had an update 5mb so did it and thats about it. Any ideas?
Sent from my LG-P920 using XDA App

Try factory reset or pdate your phone using LG Mobile Update. If it will say that you have the lates firmware you emergency mode to update.
Sent from my LG-P920 using Tapatalk

Do you know how to factory reset the phone (hard reset) and how do i update the phone via usb? I have downloaded the software but cant detect the phone....usb drivers instaled.

c-traxx said:
Do you know how to factory reset the phone (hard reset) and how do i update the phone via usb? I have downloaded the software but cant detect the phone....usb drivers instaled.
Click to expand...
Click to collapse
Ok i think i found the reason why the wifi wont switch off, it only happens when i sign in to google market. If i leave it wifi is fine. What a piece of sh..

c-traxx said:
Ok i think i found the reason why the wifi wont switch off, it only happens when i sign in to google market. If i leave it wifi is fine. What a piece of sh..
Click to expand...
Click to collapse
Sorry for posting so many times but the new lg update thing dont have emergency mode....

c-traxx said:
Sorry for posting so many times but the new lg update thing dont have emergency mode....
Click to expand...
Click to collapse
It does. Just go to customer support menu and then click on emergency mode , it's the last option to the bottom.
Also the wifi issues are not normal. Try if they will be fixed after reflashing the device. If not then maybe the device is defective. Also the battery drains really fast the first month. That's normal for smartphones and especially for this phone.

m33ts4k0z said:
It does. Just go to customer support menu and then click on emergency mode , it's the last option to the bottom.
Also the wifi issues are not normal. Try if they will be fixed after reflashing the device. If not then maybe the device is defective. Also the battery drains really fast the first month. That's normal for smartphones and especially for this phone.
Click to expand...
Click to collapse
Ok you were right but thats what i get:

c-traxx said:
Ok you were right but thats what i get:
Click to expand...
Click to collapse
Connect the usb cable to the computer.
Shut down your phone and connect it to the usb cable.
Then wait a bit and it will start up by itself.
Shut it down again.
While connected to the USB cable and completely turned off, press the volume + button at the side of the phone and at the same time press the power button.
Wait till you see that the LG mobile tool has found the phone.
The phone screen will be completely black but don't worry about it.
Run the emergency mode menu again and re-type your IMEI.
See if it works that way.

m33ts4k0z said:
Connect the usb cable to the computer.
Shut down your phone and connect it to the usb cable.
Then wait a bit and it will start up by itself.
Shut it down again.
While connected to the USB cable and completely turned off, press the volume + button at the side of the phone and at the same time press the power button.
Wait till you see that the LG mobile tool has found the phone.
The phone screen will be completely black but don't worry about it.
Run the emergency mode menu again and re-type your IMEI.
See if it works that way.
Click to expand...
Click to collapse
Its actually doing something programmers from lg didn't think about script when phone is not connected. Lets see what happens. Fingers crossed.
Ps thats the weirdest way of updating the fone btw.

c-traxx said:
Its actually doing something programmers from lg didn't think about script when phone is not connected. Lets see what happens. Fingers crossed.
Ps thats the weirdest way of updating the fone btw.
Click to expand...
Click to collapse
Ok did the update and wifi still does the same thing, will phone them to replace the handset.

SW2 Freezing and rebooting phone

Hey Guys,
Upon connecting the SW2 to my LG Optimus G Pro the watch shows a grey screen with a white download bar but never actually downloads the firmware update. The watch freezes this way and causes my phone to freeze and reboot. I've tried Sony's update utility and all my PC's do not recognize the watch when I plug it into any of the USB ports and press the power button as told to in the update utility. Anyone else have this problem or solution? I tried everything I've read in this forum including uninstalling all smartwatch apps and re-installing Smart connect and the SW2 app. Nothing has worked, but my SW1 has always worked perfectly. Any help would be appreciated.
-Thanks

chameleon1051 said:
Hey Guys,
Upon connecting the SW2 to my LG Optimus G Pro the watch shows a grey screen with a white download bar but never actually downloads the firmware update. The watch freezes this way and causes my phone to freeze and reboot. I've tried Sony's update utility and all my PC's do not recognize the watch when I plug it into any of the USB ports and press the power button as told to in the update utility. Anyone else have this problem or solution? I tried everything I've read in this forum including uninstalling all smartwatch apps and re-installing Smart connect and the SW2 app. Nothing has worked, but my SW1 has always worked perfectly. Any help would be appreciated.
-Thanks
Click to expand...
Click to collapse
i get this as well, but my phone stays on. done everything u did
calling sony support in the afternoon. wish me luck

any luck yet?

@vals13 Well... After 1 YEAR I wish any luck to you... You are looking for an answer on a year old post! [emoji57]
Sent from my C6603 using Tapatalk

Random Rebooting

Hi folks,
Has anyones Z3 started randomly rebooting on its own?
Its done it 4 times in the last hour. Battery life is at 30%
Thanks

Mine none have this issue. Try using pc companion or flashtool repair your phone.
Sent from my D6653 using XDA Free mobile app

KurtHoyle said:
Hi folks,
Has anyones Z3 started randomly rebooting on its own?
Its done it 4 times in the last hour. Battery life is at 30%
Thanks
Click to expand...
Click to collapse
No I haven't seen that on mine, and I have run my battery down numerous times. As suggested above, I would look at restoring your phone or factory resetting it

I have gone through 3 Z3s and on 4th now, all were replaced for cosmetic reasons, none had any stability issues. All were rock solid no crashes.
Try removing all non factory installed apps, if that does not work try resetting to factory defaults. If that also fails then maybe your firmware/NAND got corrupted... happened to me with an HTC One X before (NAND). I highly doubt the worst case scenario though.

Thanks everyone. Ill do a factory reset today and see if that helps
Cheers

Bumping this thread to see if anyone else has had this issue... I've Googled, and some users have experienced this issue. So far I have factory reset my phone, but that has yet to work.
I'm getting random crashes, sometimes using the phone and sometimes while it's just sitting there... It happens like at least 10-15 times a day and I've only had my phone for like 4 days.

Toneekay said:
Bumping this thread to see if anyone else has had this issue... I've Googled, and some users have experienced this issue. So far I have factory reset my phone, but that has yet to work.
I'm getting random crashes, sometimes using the phone and sometimes while it's just sitting there... It happens like at least 10-15 times a day and I've only had my phone for like 4 days.
Click to expand...
Click to collapse
Same. Struggling.

i had my first random reboot yesterday phone was just sitting there.
hasn't done one since.

I've had the phone for 4 days (Software 23.0.A.2.93) and it randomly reboots 2-3x a day.

I've had the same problem as well. Sent it to Sony for repair. They said it had something to do with the software. Asked for more information, they said an app was causing it (I use normal applications: FB, Line, reddit, skype, dropbox). Sony said they "repaired" my phone by erasing all my data and re-installed the firmware. Happened AGAIN TODAY. BTW it shows up as a "system restart" in the diagnostics menu. Is this the same for everyone experiencing this? Btw i used the pc companion to repair my phone as you have mentioned before sending it to Sony; that DIDN'T work either

I'm seeing this maybe once every 1-2 days, after reading the program list above I'm trying removing Skype to see if that's causing issues.
Ian

ke7in said:
I've had the phone for 4 days (Software 23.0.A.2.93) and it randomly reboots 2-3x a day.
Click to expand...
Click to collapse
Suggest you to update to .98 or even .105, do a factory reset and check how it works afterwards.

sxtester said:
Suggest you to update to .98 or even .105, do a factory reset and check how it works afterwards.
Click to expand...
Click to collapse
So you presume that its a problem with software and not hardware is that correct?

kiminoir said:
So you presume that its a problem with software and not hardware is that correct?
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Click to collapse
Yes, correct. I'm running on .98 since day one and never had any unintended reboots at all. As we speak, my Z3C runs since about 10 days.
Sent from my D5803 using XDA Free mobile app

sxtester said:
Yes, correct. I'm running on .98 since day one and never had any unintended reboots at all. As we speak, my Z3C runs since about 10 days.
Sent from my D5803 using XDA Free mobile app
Click to expand...
Click to collapse
How do I do that though? There are now more issues now. The necessary phone applications themselves are now crashing (ie. contacts, clock, walkman) I've included a photo for you. My current plan is to send my phone back to Sony for repair once again. The problems seem to appear out of nowhere.
Thanks in advance

kiminoir said:
How do I do that though? There are now more issues now. The necessary phone applications themselves are now crashing (ie. contacts, clock, walkman) I've included a photo for you. My current plan is to send my phone back to Sony for repair once again. The problems seem to appear out of nowhere.
Thanks in advance
Click to expand...
Click to collapse
Please use the search function, it's been explained a countless times already: http://forum.xda-developers.com/z3/general/ftf-stock-firmwares-xperia-z3-models-t2886061

I did a repair (still on .93) and it seems ok since yesterday but we'll see. Here are the instructions Sony sent me:
Thank you for contacting Sony Xperia™ Online Support.
We have an extended guide that should help you fix the issue on your phone, please follow the instructions carefully:
Visit this link:
sonymobile dot com/us/tools/pc-companion/
Click on Download PC Companion
Run the software and install it
Turn the phone off and disconnect it from the computer
1. No matter what the program says do not connect the phone until you complete step 9
2. In the welcome screen you will see the different modules available for you including the "Support Zone" option. Click on "Start" below it.
3. On the next page Click on "Start" under "Phone Software Update"
At this point if you get an error stating that "Unable to install update components" or "Server is busy" , then please proceed to step 12
4. The program will say that there is no phone connected. Click on the option below that reads: "Repair my phone" the program will issue you a warning about the content that you will lose during the update
5. Choose the option to continue.
6. The program will issue a final message warning you of possible data lost during the update. Click on the checkmark and then on "Next".
7. After that, the program will download the necessary information (5 to 6 minutes) and it will present you with a list of phones.
8. Choose your phones model from the list then click on "Next" then you will see a new section telling you how to connect the phone. (don't connect it yet)
At this point the phone must be off and disconnected from the PC.
9. Connect the cable to the PC not to the phone, then while pressing and holding the indicated button (in the steps on screen an specific button will be shown for you to press on the phone) connect the cable to the phone and keep holding the indicated button until the program says "the update of your phone has started..." (in some cases a message of "Installing drivers" will appear before the message of "the update of your phone has started..." is shown.)
10. If you failed to follow the steps correctly the phone will turn on and it will request that you "Proceed with the following steps, slide down the notification bar", If this happens disconnect the phone from the cable, turn it off and repeat from step 9).
11. If the phone is connected properly, PC Companion will proceed with the update ( It will tell you to let go of the back key) then wait for the update to finish and follow instructions on screen to disconnect the unit.
Dear Customer,
12. If "Unable to install update components"
1. Close PC Companion
2. Install Java from: java dot com
3. Start PC Companion again and try to do the software unlock process once more.
Note: If you wish only to update the unit wait for the program to open and then select the quick link on the upper left corner that says "Update Phone/Tablet" and follow the instructions to perform the update. (the PC may request for the phone to be placed in Mass Storage mode. Do this by going into Settings>Xperia>Connectivity>USB connection mode)
Click to expand...
Click to collapse

Same here.
i have the same problem but i have rooted min with Glade rom, works fine except for the random reboot.

Hi all,
2 days ago I purchased brand new Z3 and today the device started restarting every 15-20 minutes. There are no external factor that seems to be causing it – the phone restarts without being in use. What I’ve notice is that it’s doing a “Soft Reboot”.
Some additional info – after the phone was turned on for first time it asked for an Software Update to Android 5.0. After installation it rebooted and asked for another update. The heaviest app that is currently running is Facebook.
I would really appreciate any suggestions as I would like to avoid waiting for two weeks for the service centre to do something, that I can also do.
Thanks!

KurtHoyle said:
Hi folks,
Has anyones Z3 started randomly rebooting on its own?
Its done it 4 times in the last hour. Battery life is at 30%
Thanks
Click to expand...
Click to collapse
...

phone repair with PC Companion, volume down doesn't work

I have a XZ, clean, nothing flashed or bootloader unlocked or whatsoever. I have the official Nougat installed but sometimes the phones is lagging suddenly. I had this in my Sonos app, in Runkeeper and it seems to be happening more and more. No problem so far, first let me reinstall everything. So I installed the lastest PC Companion and choose Software Repair. I asked me to turn off the phone, wait 5 seconds and then hold down volume down button and reattach to PC. I did this, but when reattach it, nothing happens. The led is green and slowly blinking(on for 5 seconds and then off or 5 seconds, and so on).
What is wrong here?

I assume, the factory reset is not as a hard reset as PC Companion does?

Nobody? The volume down does work while booted, so it looks like Volume Down isn't recognized when holding down and plugging it in. Or is this different for the XZ and is PC Companion suggesting the wrong instructions.

I have the same issue with both my XZ and my Z4 Tablet

olafd72 said:
Nobody? The volume down does work while booted, so it looks like Volume Down isn't recognized when holding down and plugging it in. Or is this different for the XZ and is PC Companion suggesting the wrong instructions.
Click to expand...
Click to collapse
Did you try in a different Pc maybe Driver wasn't installed correctly.
I did a repair it got till 30% and then got message says failed did the process all again and went to 100% and worked again perfectly.
Or try another USB port but if u gave another pc better.
Check and tell me.

Good call, tried on another PC and it worked first time.
fgar82 said:
Did you try in a different Pc maybe Driver wasn't installed correctly.
I did a repair it got till 30% and then got message says failed did the process all again and went to 100% and worked again perfectly.
Or try another USB port but if u gave another pc better.
Check and tell me.
Click to expand...
Click to collapse