[HOWTO] Change PRL on Virgin Mobile LG Optimus V (5/06/2011)

freddysam · Mar 23, 2011

i shot jfk said:
followed your steps and got the same results as kate.

getting extremely frusterated with the process.

What happens after you uninstall the Android Sooner Single ADB Interface Driver and delete it? Does the phone show up as an unrecognized device?

Do you see the "LGE Android Platform USB Serial Port" when you try to add the driver manually?

I'm not sure why this happens.

Necrosan · Mar 23, 2011

For what it's worth this also does not work for me to obtain the MSL, and I can see the proper com port.

Cdma workshop just says "cannot connect" compared to "port not open" for non open ports.

Port shows that it is fine and working, no warning triangles on the device in device manager or anything.

I'm also on Windows 7 x64.

Easiest way is to downgrade to an older firmware version and pull the MSL thru adb until this method is finalized.
No issues with that method.

freddysam · Mar 23, 2011

Necrosan said:
For what it's worth this also does not work for me to obtain the MSL, and I can see the proper com port.

Cdma workshop just says "cannot connect" compared to "port not open" for non open ports.

Port shows that it is fine and working, no warning triangles on the device in device manager or anything.

I'm also on Windows 7 x64.

Easiest way is to downgrade to an older firmware version and pull the MSL thru adb until this method is finalized.
No issues with that method.

I just did a clean install of the drivers on a new windows 7 x64 machine using the drivers I linked to. It worked flawlessly. I think the problem you people are having is caused by installing other drivers. You need to manually remove those drivers. I posted how to do that repeatedly. Device manager> Right click the incorrect driver> Uninstall> check the box to delete the driver. Unplug and replug your USB cable. If an incorrect driver installs, repeat the steps to remove it. You could have multiple copies of the same driver. Keep doing this until device manager comes back with "unknown device". Right click on it and select Update Driver Software> Browse my Computer> Let me pick from a list> All> (wait for the list to be populated)> LG Electronics Inc> LGE Android Platform USB Serial.

If you don't see LG Electronics Inc, then you haven't even installed the drivers pack yet. Install it and replug the USB.

Kate6 · Mar 24, 2011

freddysam said:
I just did a clean install of the drivers on a new windows 7 x64 machine using the drivers I linked to. It worked flawlessly. I think the problem you people are having is caused by installing other drivers. You need to manually remove those drivers. I posted how to do that repeatedly. Device manager> Right click the incorrect driver> Uninstall> check the box to delete the driver. Unplug and replug your USB cable. If an incorrect driver installs, repeat the steps to remove it. You could have multiple copies of the same driver. Keep doing this until device manager comes back with "unknown device". Right click on it and select Update Driver Software> Browse my Computer> Let me pick from a list> All> (wait for the list to be populated)> LG Electronics Inc> LGE Android Platform USB Serial.

If you don't see LG Electronics Inc, then you haven't even installed the drivers pack yet. Install it and replug the USB.

Already did that numerous times. It doesn't come back with "Unknown device," it comes back with "LG Android USB Device" and shows a little bubble in the system tray saying it failed to install drivers. If I click on the bubble for more info, it pops up a little window that says "LG Android USB Device" then a red X, then "No driver found."

At that point I install your drivers, unplug and replug in the phone and it comes up with the "Android Sooner Single ADB Interface" again, except this time it has a yellow triangle icon on it with an exclamation mark. When I click on it, the "Device Status" in the window that comes up says "Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"

This appears to be a possibly corrupt driver included in your software package. I've just tried it on a *third* computer and it's still there. At least one of the three computers I've tried this on had a *fresh* (2 day old) install of Windows 7 on it where no other LG drivers had ever been installed, and this still came up on it.

In any case, if I click on the malfunctioning "Sooner Single" from your package, choose Uninstall and check the "Delete the driver software box" I then again get an "LG Android USB Device" for which drivers could not be found, just like before I installed your driver package. I then go through your recommended manual procedure to choose the "LGE Android Platform USB Serial Port" driver. And when I try to open that port in CDMA workshop, it's unable to.

I've done this on three different computers now. There are no other COM ports set up on any of them. No Bluetooth Serial, no GPS serial port, nothing. So no conflicts. I also tried pretty much every COM port between 1 and 7 (or whatever the highest the demo lets you use) on all three.

Necrosan · Mar 24, 2011

freddysam said:
I just did a clean install of the drivers on a new windows 7 x64 machine using the drivers I linked to. It worked flawlessly. I think the problem you people are having is caused by installing other drivers. You need to manually remove those drivers. I posted how to do that repeatedly. Device manager> Right click the incorrect driver> Uninstall> check the box to delete the driver. Unplug and replug your USB cable. If an incorrect driver installs, repeat the steps to remove it. You could have multiple copies of the same driver. Keep doing this until device manager comes back with "unknown device". Right click on it and select Update Driver Software> Browse my Computer> Let me pick from a list> All> (wait for the list to be populated)> LG Electronics Inc> LGE Android Platform USB Serial.

If you don't see LG Electronics Inc, then you haven't even installed the drivers pack yet. Install it and replug the USB.

That was actually the first thing I did, so no that isn't it.

freddysam · Mar 24, 2011

Kate6 said:
Already did that numerous times. It doesn't come back with "Unknown device," it comes back with "LG Android USB Device" and shows a little bubble in the system tray saying it failed to install drivers. If I click on the bubble for more info, it pops up a little window that says "LG Android USB Device" then a red X, then "No driver found."

At that point I install your drivers, unplug and replug in the phone and it comes up with the "Android Sooner Single ADB Interface" again, except this time it has a yellow triangle icon on it with an exclamation mark. When I click on it, the "Device Status" in the window that comes up says "Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"

This appears to be a possibly corrupt driver included in your software package. I've just tried it on a *third* computer and it's still there. At least one of the three computers I've tried this on had a *fresh* (2 day old) install of Windows 7 on it where no other LG drivers had ever been installed, and this still came up on it.

In any case, if I click on the malfunctioning "Sooner Single" from your package, choose Uninstall and check the "Delete the driver software box" I then again get an "LG Android USB Device" for which drivers could not be found, just like before I installed your driver package. I then go through your recommended manual procedure to choose the "LGE Android Platform USB Serial Port" driver. And when I try to open that port in CDMA workshop, it's unable to.

I've done this on three different computers now. There are no other COM ports set up on any of them. No Bluetooth Serial, no GPS serial port, nothing. So no conflicts. I also tried pretty much every COM port between 1 and 7 (or whatever the highest the demo lets you use) on all three.

Here is the problem, stop installing the drivers by running the exe. You already have the correct drivers on your computer. After you uninstall the Sooner drivers, don't reinstall the package. Make sure USB debugging is on, plug in your phone, then go into the device manager. If you don't see "unknown device", then right click at the top of the list where it says your computer name and select, "add legacy hardware" then go through the process to add the "LGE Android Platform USB Serial Port" drivers.

Every time you reinstall the package you are getting another copy of the Sooner drivers along with the LGE drivers. I'm not sure why it is not working. You even acknowledge seeing the LGE drivers.

Kate6 · Mar 24, 2011

freddysam said:
Here is the problem, stop installing the drivers by running the exe. You already have the correct drivers on your computer. After you uninstall the Sooner drivers, don't reinstall the package. Make sure USB debugging is on, plug in your phone, then go into the device manager. If you don't see "unknown device", then right click at the top of the list where it says your computer name and select, "add legacy hardware" then go through the process to add the "LGE Android Platform USB Serial Port" drivers.

Every time you reinstall the package you are getting another copy of the Sooner drivers along with the LGE drivers. I'm not sure why it is not working. You even acknowledge seeing the LGE drivers.

Okay...

(1) Thus far, every time I've attempted to do this and it's failed, I've removed the .EXE using the Remove Programs controlled panel when I finished off. Having removed it, I'm fairly sure there were no copies of the drivers left on my system. The reason I'm fairly sure about this is because after removing it, if I plug in the phone, Windows tells me it was unable to find a driver for it.

(2) The LG drivers do not show up for me under the "Add legacy hardware" function.

(3) I'm fairly sure I'm following your instructions correctly, and yet CDMA Workshop is still unable to open that port.

(4) Is there any way you could attach the actual .sys file for the driver that's working for you? If you right click on the entry for the COM port in the device manager, choose Properties => Driver => Driver Details, it should tell you what the actual file is.

(5) Any information on what ROM this is working for you with? I'm running the stock ROM, though I've rooted it and deleted a few unwanted programs from /system/app. I can't help but wonder if maybe this method only works with certain ROMs.

Thank you.

rjones1981 · Mar 24, 2011

Try turning off your Optimus V while leaving the USB cable plugged in. When I did this, it installed the COM port in Device Manager automatically, and I was then able to use both CDMA Workshop and QPST without a problem.

Edit: I had to leave the phone off while accessing it with QPST and CDMA Workshop. When it's powered back up, the COM port no longer shows up in Device Manager.

freddysam · Mar 24, 2011

Kate6 said:
Okay...

http://kate6.org/LG.png

Thank you.

My driver is lganddiag64.sys ver 2.2.

I am using aospCMod, but I have done with with the stock rom too. The rom should not matter.

Where is says "Location:" it should be "on LGE Android Platform Composite USB Device". ....Hmmmmm....

Try rjones1981 suggestion. I don't know why that would work but it can't hurt at this point. I blamed this all on windows.

Kate6 · Mar 25, 2011

rjones1981 said:
Try turning off your Optimus V while leaving the USB cable plugged in. When I did this, it installed the COM port in Device Manager automatically, and I was then able to use both CDMA Workshop and QPST without a problem.

Edit: I had to leave the phone off while accessing it with QPST and CDMA Workshop. When it's powered back up, the COM port no longer shows up in Device Manager.

This totally worked. I'm now running the 61677 hybrid PRL! Thank you ever so much to both freddysam, for figuring out most of the details of the process and for making the hybrid PRL, and to rjones1981, for figuring out the last critical bit that was fowling me up.

It's already very clear that I'm getting better signal within my apartment. I guess I'll see over the next few days how much better things are overall.

Oh, and freddy... I'm completely with you on blaming Windows for this.

Windows, or possibly Canada.

freddysam · Mar 25, 2011

Kate6 said:
This totally worked. I'm now running the 61677 hybrid PRL! Thank you ever so much to both freddysam, for figuring out most of the details of the process and for making the hybrid PRL, and to rjones1981, for figuring out the last critical bit that was fowling me up.

It's already very clear that I'm getting better signal within my apartment. I guess I'll see over the next few days how much better things are overall.

Oh, and freddy... I'm completely with you on blaming Windows for this. Windows, or possibly Canada.

Haha, I'm glad it worked out. I'm going to add this to the main post. I still have no idea what caused this, and why turning the phone off fixed it. Windows!!!!!

crc111 · Mar 25, 2011

Hello. I bought two Optimus V. Why do you have to change the PRL? Is it to gain more Sprint towers to connect from?

Thanks in advance.

crc111 · Mar 25, 2011

freddysam said:
I just did a clean install of the drivers on a new windows 7 x64 machine using the drivers I linked to. It worked flawlessly. I think the problem you people are having is caused by installing other drivers. You need to manually remove those drivers. I posted how to do that repeatedly. Device manager> Right click the incorrect driver> Uninstall> check the box to delete the driver. Unplug and replug your USB cable. If an incorrect driver installs, repeat the steps to remove it. You could have multiple copies of the same driver. Keep doing this until device manager comes back with "unknown device". Right click on it and select Update Driver Software> Browse my Computer> Let me pick from a list> All> (wait for the list to be populated)> LG Electronics Inc> LGE Android Platform USB Serial.

If you don't see LG Electronics Inc, then you haven't even installed the drivers pack yet. Install it and replug the USB.

I'm also using ADB and SuperOneClick. Does this driver work with ADB and SuperOneClick?

Thanks.

neutronscott · Mar 25, 2011

Yes, why? As a PRL is a preferred roaming list, and roaming isn't possible, how does this fix anything?

Are there Sprint towers which aren't already allowing VM handsets, or aren't advertising 3G?

I mean I was gonna try it anyway, just wondering if there's a technical explanation underneath which I'm missing..

freddysam · Mar 25, 2011

neutronscott said:
Yes, why? As a PRL is a preferred roaming list, and roaming isn't possible, how does this fix anything?

Are there Sprint towers which aren't already allowing VM handsets, or aren't advertising 3G?

I mean I was gonna try it anyway, just wondering if there's a technical explanation underneath which I'm missing..

The VM PRL has a very limited set of acquisition records it will try when not roaming. The Sprint PRL has drastically more. The term roaming list is a bit of a misnomer as the PRL is used to figure out which bands/frequencies to try to find a signal. Only a subset of those are labeled as roaming. The rest are operated by Sprint. Although we can't prove it, the Sprint PRL could give you more coverage.

zanpaktou · Mar 26, 2011

currently running the 61677 hybrid PRL! fantastic 3G works well and no complaints so far

phreak311 · Mar 26, 2011

I figured out u had to turn off the phone with the usb still in, in about 3 minutes D: i aread ur problem and was about to post but freddy beat me to it D: good job though

tytyty11 · Mar 26, 2011

So I am using windows xp 32 bit and i was having the same problem with the device not showing in the ports... Tried everything... Then i turned off the phone and the ports showed up however i cant access it through qpst because while reading the phone about 80% through it stops and says "The Phone has stopped responding to memory read/write commands"

HELP! i got my MSL and everything but i just cant get it to read correctly in QPST

EDIT: I AM DUMB AND DIDNT READ THE DIRECTIONS

Step1Mark · Mar 28, 2011

Worked for me.

I just went through all the steps in what felt like less than 2 minutes. I live out in the middle of no where and no one really gets service here so I cant test the results yet. I will be sure to post a follow up about the process and results. If I get the time I will put together a video tutorial that the OP can add to his guide if he likes.

freddysam · Mar 28, 2011

Step1Mark said:
I just went through all the steps in what felt like less than 2 minutes. I live out in the middle of no where and no one really gets service here so I cant test the results yet. I will be sure to post a follow up about the process and results. If I get the time I will put together a video tutorial that the OP can add to his guide if he likes.

A video would be great, thanks!

[HOWTO] Change PRL on Virgin Mobile LG Optimus V (5/06/2011)

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

New member

Senior Member

Senior Member

Senior Member

Member

Member

Member

Senior Member

New member

Account currently disabled

Member

Member

Senior Member

Similar threads

Top Liked Posts