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Root Optimus V black screen with no bootloader

K

KalmarLoridelon

Lurker
I did what many complain about due to inexperience. I did a settings restore on a rooted android. I apologize in advance for my ignorance. Now that I have done that though my phone only boots to a black screen after the LG logo. No bootloader or anything at all, and it just remains there. Connecting it to my computer doesn't work. It can't install drivers to access it. Is there any way that I can fix this? I couldn't find anything anywhere about this issue.
 
I'm going to have a Moderator move this thread to the All Things Root sub-forum where it will get the needed attention for your Rooted Problem.

Could you let us know what the baseband is. I noticed you said it wouldn't get into the bootloader. I would be assuming you have a ZV4 baseband V. Is that correct?

I take it you can't get it into the recovery as well. Is that correct?

Can you get it into Emergency mode?

We might need to use either the KDZ unbrick guide or the KP500. I have the ZV4 versions of both if you do in fact have a ZV4 baseband V.

Let me know, we will see what can be done. It can be fixed, it's just a matter of how much work is going to have to be done to fix it.
 
Go to settings >about phone >baseband version =VM670 ZV4, ZV5 or ZV9.

EDIT .....Doh, brain fart, sorry, black screen, my bad, delete post!
 
KalmarLoridelon said:
I have no idea what baseband it is. Nope, no recovery but emergency does work.
Click to expand...

Since you don't know the baseband, but you can't get the phone to boot, let me know when you bought it and if it was new or used (month and year).

Once I have determined the baseband I will hook you up with either the KDZ or KP500 unbrick guides with the proper firmware for your V's baseband.
 
I don't remember the exact date, it was about a year ago. It was a new virgin mobile phone. Under the battery it says VM670. I imagine I can't make things much worse than they are now. Just fixing it so I can give it to my friend since his phone is a dinosaur. I appreciate the help.
 
It's probably a ZV5 baseband V.

We are going to slice the bologna. We will try something easy first.

Go here: http://androidforums.com/optimus-v-...guide-unbrick-upgrade-optimus-v-easy-kdz.html

Make sure you have a very good internet connection.
It might take several tries to get it to start with no error. Keep trying until you see a readout that pops up that shows a
scrolling text that eventually will display:
wParam:7, IParam=00
then:
wParam:7, IParam=01
and so on and so on until you get to
wParam:7, IParam=100
(in the middle of all this you will ocasionally get a dll message error, this is normal), then
you will get:
wParam:8, IParam=00
It should now go into battery charge mode, or recovery mode, or boot into the phone.

It will probably error during the wParam:7, IParam=?? part the first time. if it does, unplug the phone, pull the battery, and reinsert the battery and try again.


Notes:
01. If it stops before wParam:8, IParam=00 after the second attempt or it hangs in the bootanimation, and you have no recovery, get into the fastboot screen (same
way you get into the recovery, but with no recovery it will automatically go to the fastboot
screen).
Plug the phone into the computer and open a terminal in C:/ SDK/ folder the fastboot.exe is in (Windows it's the tools folder/Linux it's the platform-tools folder) that you
should already have on your C: drive (If no SDK folder let me know, I have one you can download).
Then type in this code:
fastboot erase recovery
fastboot erase boot
fastboot erase system
fastboot erase userdata
fastboot erase cache
Pull battery, get into the E-mode and start the KDZ utility over.
02. If it boots into the recovery just select the "wipe data/factory reset" option, unplug the phone
from the computer and then select the "reboot system now" option.
03. If it goes to battery charge mode just unplug from computer and push the power button.
04. On the first boot up it might takes as long as 10 minutes to fully boot into the lockscreen.

PS: Do you already have the Android SDK setup properly on your computer?
 
Sorry for the delay, life an all. I don't have an SDK on here at the moment. Deleted most of the stuff I had tried. What one do you recommend for this procedure?
 
Didn't seem to work. When I ran the program in emergency mode it finished without doing any of the perm stuff but made it boot into emergency mode when I turned it on normally. It just didn't say emergency on it anymore. But from that screen when I ran the program it went all the way through it like you described. After it ran it still went to the black screen when I booted and didn't have fastboot or recovery still.
 
Did it go to wParam:8, IParam=00. If it didn't, but said finished it means we will need to use the Android SDK and fastboot commands to erase the partitions manually, then retry the KDZ.

Let me know what it did, and if you need help getting the SDK setup properly.
 
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