blank screen - Sprint LG Optimus G

I was originally on a CM rom but decided to give a stock based rom a try and it flashed and booted successfully. Now I want to go back to CM and flashed another CM rom but now it won't boot. It flashes the LG logo for a half a second and then just hangs at a blank screen. Any ideas?

griffstert said:
I was originally on a CM rom but decided to give a stock based rom a try and it flashed and booted successfully. Now I want to go back to CM and flashed another CM rom but now it won't boot. It flashes the LG logo for a half a second and then just hangs at a blank screen. Any ideas?
Click to expand...
Click to collapse
I encountered something like that a while ago. I solved it by shutting it down (hold power button for 20 or so seconds) then let it sit for about an hour.. It booted up after that. Hopefully it works!
If not, you might have to lgnpst
Sent from my LG-LS970 using xda app-developers app

griffstert said:
I was originally on a CM rom but decided to give a stock based rom a try and it flashed and booted successfully. Now I want to go back to CM and flashed another CM rom but now it won't boot. It flashes the LG logo for a half a second and then just hangs at a blank screen. Any ideas?
Click to expand...
Click to collapse
Please provide more information so we may better help you...
Which AOSP-based ROM did you flash before you encountered the problem?
Did you wipe everything before flashing?
Did you flash anything in addition to the new ROM?
Are you still able to get into TWRP Recovery?

prowlingfox said:
Please provide more information so we may better help you...
Which AOSP-based ROM did you flash before you encountered the problem?
Did you wipe everything before flashing?
Did you flash anything in addition to the new ROM?
Are you still able to get into TWRP Recovery?
Click to expand...
Click to collapse
Yes, I'm still able to get into twrp but restoring now fails.I went from BeanStalk to Vectus Slim to NexOGen to SuperNexus (never booted), now I can't flash any stock or cm based rom without it hanging. I always wipe system, cache, dalvik, and data before flashing into another rom. I only flash the rom and gapps.

do you guys think if formatting the card and sideloading a rom might help?

Did you ever flash a teenybin?
Sent from my LG-LS970 using Tapatalk 4

EFEXR said:
Did you ever flash a teenybin?
Sent from my LG-LS970 using Tapatalk 4
Click to expand...
Click to collapse
I don't believe I have. I never had any issues until now.

I found this thread which seems similar to the problems I'm having. It seems like formatting data could fix the problem. If not, i'll try LGPNST and flashing teenybins next.
Thread: http://forum.xda-developers.com/showthread.php?t=2342985&page=2

I believe flashing a teenybin was recommended for CM so occurances like the LG logo to black screen would not occur. This happened to me, so I know by experience. A lot of people dont do it because it seemed to complicated and flashed CM and nothing happened, most likely it will happen to them sooner or later.
Good luck with the teenybin, I'm pretty sure that will solve your problem, as that solved my LG logo to black screen problem months ago
Sent from my LG-LS970 using Tapatalk 4

EFEXR said:
I believe flashing a teenybin was recommended for CM so occurances like the LG logo to black screen would not occur. This happened to me, so I know by experience. A lot of people dont do it because it seemed to complicated and flashed CM and nothing happened, most likely it will happen to them sooner or later.
Good luck with the teenybin, I'm pretty sure that will solve your problem, as that solved my LG logo to black screen problem months ago
Sent from my LG-LS970 using Tapatalk 4
Click to expand...
Click to collapse
Did not know this, thank you very much. Formatting the data and flashing a new rom via adb worked by the way. As you suggested, I just flashed the original teenybin with LGNPST and everything went smoothly. Hopefully, I don't have to run into the logo black screen issue again. Thanks!

Related

Flashing CM9 freezes mid install

So I have been trying to flash CM9 for the past couple of days, at first it worked just fine but I forgot google apps, so I went back to recovery and flashed gapps. After that it wouldn't leave the boot screen. I used odin to put a stock ICS rom on, then flashed clockwork and now every time I try to install cm9 It just stops on "installing." Did I miss something very simple and obvious or what?
How long are you letting it sit on "install"?
I've tried several time's usually only a few minutes, but at one point I left to the store and came back like an hour later and it was still on installing. Had to pull the battery every time, then I have to use odin because I can't get into recovery.
marksman34 said:
So I have been trying to flash CM9 for the past couple of days, at first it worked just fine but I forgot google apps, so I went back to recovery and flashed gapps. After that it wouldn't leave the boot screen. I used odin to put a stock ICS rom on, then flashed clockwork and now every time I try to install cm9 It just stops on "installing." Did I miss something very simple and obvious or what?
Click to expand...
Click to collapse
You need to follow the instructions to the letter .... and when you get it flashed if it don't boot go back into stock recovery and wipe data and it should boot
Sent from my SPH-D710 using xda premium
OK, I'm going through it again, but I did forget to mention one thing that might be important. After I odin CWM, my current rom does not boot though I can boot to cwm. Is that expected?
marksman34 said:
OK, I'm going through it again, but I did forget to mention one thing that might be important. After I odin CWM, my current rom does not boot though I can boot to cwm. Is that expected?
Click to expand...
Click to collapse
The directions say go back and flash cm7 are you trying to go from ics to cm9 ? If so your risking a brick be safe
Sent from my SPH-D710 using xda premium
Oh damn, there is a CM7? I can't find that one at all. Any help on that would be appreciated. However I did just get past the install so maybe it will work(hopefully without creating a brick).
EDIT: It booted seems to be working well. I would like a cm7 link if any one has it though, just in case
marksman34 said:
Oh damn, there is a CM7? I can't find that one at all. Any help on that would be appreciated. However I did just get past the install so maybe it will work(hopefully without creating a brick).
EDIT: It booted seems to be working well. I would like a cm7 link if any one has it though, just in case
Click to expand...
Click to collapse
all cm7 links i can find right now are down or dead slow..
marksman34 said:
Oh damn, there is a CM7? I can't find that one at all. Any help on that would be appreciated. However I did just get past the install so maybe it will work(hopefully without creating a brick).
EDIT: It booted seems to be working well. I would like a cm7 link if any one has it though, just in case
Click to expand...
Click to collapse
You can use miui 2.3 from tcp its the same kernel in cm7
Sent from my SPH-D710 using xda premium

[Q] Soft bricked my phone

So this is kind of a unique issue i'm having. I have the I-747 on AT&T and flashed AOKP rom (it was taking too long to get JB). It worked for about 3 days and then got stuck in the android boot screen (used the rom feature to get rid of the pink unicorns). after that, I booted into recovery and reset my phone, and it worked again for a few more days, then it wouldnt boot again (I dont believe I changed any settings between the boots). After this time, it wouldnt let me boot into recovery and would only boot to the android start screen and stop. I used odin to flash the stock rom, which only took me to the 2nd samsung boot screen and stopped (after the AT&T splash shows up). I looked online and saw someone say try CF-root using odin, tried that and it didnt help. Then tried using a custom kernel siyah s3, and now it will only show the initial samsung splash screen before turning off again. Any suggestions here? I figured I'd stop researching since i dont want to really mess up my phone worse than it already is
mrneilix said:
So this is kind of a unique issue i'm having. I have the I-747 on AT&T and flashed AOKP rom (it was taking too long to get JB). It worked for about 3 days and then got stuck in the android boot screen (used the rom feature to get rid of the pink unicorns). after that, I booted into recovery and reset my phone, and it worked again for a few more days, then it wouldnt boot again (I dont believe I changed any settings between the boots). After this time, it wouldnt let me boot into recovery and would only boot to the android start screen and stop. I used odin to flash the stock rom, which only took me to the 2nd samsung boot screen and stopped (after the AT&T splash shows up). I looked online and saw someone say try CF-root using odin, tried that and it didnt help. Then tried using a custom kernel siyah s3, and now it will only show the initial samsung splash screen before turning off again. Any suggestions here? I figured I'd stop researching since i dont want to really mess up my phone worse than it already is
Click to expand...
Click to collapse
I have a similar issue, someone please help
Your main issue now is that you flashed siyah. We don't have one. If you can get to download mode, you will want to flash back to stock.
Sent from my SGH-I747 using xda premium
As DeathSdoor said...flash stock.
Sent from my SAMSUNG-SGH-I747
d3athsd00r said:
Your main issue now is that you flashed siyah. We don't have one. If you can get to download mode, you will want to flash back to stock.
Sent from my SGH-I747 using xda premium
Click to expand...
Click to collapse
Thanks guys! So I used odin to flash the stock boot loader and stock rom, but it is still hanging up on the 2nd samsung screen like it initially did (the one after the AT&T boot animation). Any other ideas on what could be the cause?
How long is the hang? Sure is just not the 1st initial boot of the new rom?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
blaker13 said:
How long is the hang? Sure is just not the 1st initial boot of the new rom?
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
The first boot can take as long as 5 minutes sometimes. So, if you haven't waited that long, then try out some patience. Otherwise, try booting into recovery (stock now) and factory reset.
Sent from my SGH-I747 using xda premium
bump!
I have this same issue. I have restored to stock rom and it does the Samsung boot, then AT&T, then it goes to Samsung pulsating with a blue pulsating LED.
I have left it in that mode for at least 15 minutes and it never boots.
I can still get into download mode.
Thanks in advance for any help!
Has anyone tried booting into recovery after flashing the stock ROM and wiping caches then rebooting?
jethro650 said:
Has anyone tried booting into recovery after flashing the stock ROM and wiping caches then rebooting?
Click to expand...
Click to collapse
I let it run for 2 hours (left the house came back and i was still on. And phone wont boot into recovery at all ( i tried many times, but it just boots normally and skips recovery until it gets to the 2nd samsung screen, then stops there).
I dont know if this is relevant, but while the phone is off and plugged in, i can still see the battery meter and the Green LED (so i'm guessing it's still working, it just wont boot)
mrneilix said:
And phone wont boot into recovery at all ( i tried many times, but it just boots normally and skips recovery until it gets to the 2nd samsung screen, then stops there).
Click to expand...
Click to collapse
Same here!!!
jethro650 said:
Has anyone tried booting into recovery after flashing the stock ROM and wiping caches then rebooting?
Click to expand...
Click to collapse
As Jethro said clean everything and factory format in recovery. Your just not doing the buttons right to get in to recovery
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
blaker13 said:
As Jethro said clean everything and factory format in recovery. Your just not doing the buttons right to get in to recovery
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I went into recovery many times before, I'm definitely hitting the buttons right but it still wont go into recovery, it just tries booting like normal. I can go into download mode easily, but that's it.
jbizz, did you start getting this error after flashing AOKP rom also? trying to figure out what could have caused the issue in the first place
I'm not really skilled on these things, but I once had a similar issue with my phone not booting and had to end up using Kies to emergency restore it. Odin wouldn't recognize my phone but kies would.
Although I think my issue with odin may be stemming from my computers usb ports...
Sent from my SGH-I747 using XDA Premium HD app
I actually flashed a bad kernel and the phone wouldn't boot after that.
What is the proper way to boot into Stock Recovery?
Sent from my SAMSUNG-SGH-I777 using xda premium
Fixed it! What I did was go into Kies software and did a firmware upgrade instead of trying to flash from odin, then put it in download mode instead of recovery, but it still worked. Thanks for all the help, guys! guess it's time to move to a CM based rom?
mrneilix said:
Fixed it! What I did was go into Kies software and did a firmware upgrade instead of trying to flash from odin, then put it in download mode instead of recovery, but it still worked. Thanks for all the help, guys! guess it's time to move to a CM based rom?
Click to expand...
Click to collapse
Thats bad badassness! I will try that when I get home!
Sent from my SAMSUNG-SGH-I777 using xda premium
mrneilix:
Please give me step by step what you did! Kies is being a bastard!
Sent from my SAMSUNG-SGH-I777 using xda premium
jbizz said:
mrneilix:
Please give me step by step what you did! Kies is being a bastard!
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
Sure, I'm doing this largely from memory since I mostly figured it out by throwing stuff at the wall to see what sticks.
Open Kies->tools->firmware upgrade and initialization->enter model name then serial number (they're behind the battery) -> put the phone in download mode and plug it in. it should take care of the rest.
Fair warning, this will fully wipe your phone, i lost all my pics (thank you google+'s instant upload or i'd be PISSED) and titanium backup (there goes my 3 stars on every level in angry birds and great scores in temple run), but at least you get a phone that can function as more than a paper weight, right?
mrneilix:
You're my new best friend and I don't even know you!!!
Thanks for the help, you're a legend!
Sent from my SAMSUNG-SGH-I747 using xda premium

Help stock or any touchwiz rom bug

So I've tried every rom that was based off the official jellybean. I even tried the stock rom by using Odin and it is still giving me problems too. So far, on every rom, it skips the welcome page after it boots and goes directly to the system manager popup. After that, my homescreen is all messed up. Someone please help
I'm using TWRP btw
chens23 said:
So I've tried every rom that was based off the official jellybean. I even tried the stock rom by using Odin and it is still giving me problems too. So far, on every rom, it skips the welcome page after it boots and goes directly to the system manager popup. After that, my homescreen is all messed up. Someone please help
I'm using TWRP btw
Click to expand...
Click to collapse
Try just stock on odin
Sent from my SGH-T989 using Tapatalk 2
esema1o said:
Try just stock on odin
Sent from my SGH-T989 using Tapatalk 2
Click to expand...
Click to collapse
I've already tried stock lol. It doesn't work. I keep getting the same results
After you flashed stock on Odin did you do a factory reset? Try that. It should solve your problem.
alloycowboy said:
After you flashed stock on Odin did you do a factory reset? Try that. It should solve your problem.
Click to expand...
Click to collapse
I tried that. It gives me the same thing. It skips the welcome screen for the tw jb roms and then the system manager randomly pops up. After it pops up, I get these random texts shown in the picture on my home screen and sometimes I can't pull down the notification bar when that happens. It was working fine yesterday though.
alloycowboy said:
After you flashed stock on Odin did you do a factory reset? Try that. It should solve your problem.
Click to expand...
Click to collapse
Never mind, I found a fix. Just had to restore back to my old ics touchwiz rom and delete root. Then I used kies to update to jellybean.

Help I think my Note 2 is on it's last leg

so I don't know how it happened
but over the past couple weeks I've had a lot of trouble with my phone
I didn't notice any issues until I flashed Skynote
it started out as just my computer not recognizing it when connected via USB
but problems have escalated further now
for some reason if I try flashing touchwiz roms 1/2 the time TWRP crashes while doing it and if it doesn't it constantly hangs up during flashing(it took me almost 1/2 hour to flash ultimate internation rom last night)
If I get a rom running the phone is constantly hanging when going through the settings menu.. or if an app is installing it will lock up totally for like 5 seconds
I've formatted thru twrp, I wipe the system every time. I've tried countless factory resets
nothing seems to be helping
anyone have any idea what might be going on?
Probably something corrupt or misplaced. Flash stock to using odin. That should fix it
mrevankyle said:
Probably something corrupt or misplaced. Flash stock to using odin. That should fix it
Click to expand...
Click to collapse
+1..... also wipe external SD card
Sent from my SAMSUNG-SGH-I317 using Xparent Skyblue Tapatalk 2
mrevankyle said:
Probably something corrupt or misplaced. Flash stock to using odin. That should fix it
Click to expand...
Click to collapse
Well I'm gonna sound stupid but is there a walk through on how to do that?
viper98 said:
Well I'm gonna sound stupid but is there a walk through on how to do that?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2275844
mrevankyle said:
http://forum.xda-developers.com/showthread.php?t=2275844
Click to expand...
Click to collapse
thanks I'll try this out and see if it fixes my issues
viper98 said:
so I don't know how it happened
but over the past couple weeks I've had a lot of trouble with my phone
I didn't notice any issues until I flashed Skynote
it started out as just my computer not recognizing it when connected via USB
but problems have escalated further now
for some reason if I try flashing touchwiz roms 1/2 the time TWRP crashes while doing it and if it doesn't it constantly hangs up during flashing(it took me almost 1/2 hour to flash ultimate internation rom last night)
If I get a rom running the phone is constantly hanging when going through the settings menu.. or if an app is installing it will lock up totally for like 5 seconds
I've formatted thru twrp, I wipe the system every time. I've tried countless factory resets
nothing seems to be helping
anyone have any idea what might be going on?
Click to expand...
Click to collapse
I have faced similar issues twice after changing a rom. The only way back to stability was to odin a stock firmware on to the note II and then to re-root, re-install a custom recovery and reflash the rom.
You can use this thread to get the files to odin back to stock: http://forum.xda-developers.com/showthread.php?t=2275844
Give it a try. . . it helped me!
thanks for the help guys
seems to be running well on stock......I'm gonna put it through it's paces for a while before I get my hopes totally up though
I think I'm just gonna keep it like this until we get some 4.2.2 touchwiz roms
hopefully with 4.2.2 coming out in the coming days the wait wont be too long
Dirty devices...
They all need a good cleaning once in a while ...g
Sent from my SAMSUNG-SGH-I317 using XDA Premium HD app
viper98 said:
thanks for the help guys
seems to be running well on stock......I'm gonna put it through it's paces for a while before I get my hopes totally up though
I think I'm just gonna keep it like this until we get some 4.2.2 touchwiz roms
hopefully with 4.2.2 coming out in the coming days the wait wont be too long
Click to expand...
Click to collapse
Try CWM recovery, not twrp....I never use twrp, , always hearing issues with people using that recovery method...Some phone's just don't like it..lol
And like Greg stated...most phones need a thorough cleaning every now and then to get the bugs out.
With TWRP its always good to have the latest version... it can really make a difference
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
I prefer using CWM to flash ROMs on my device. I Always had problems flashing zips on my phone using TWRP recovery. It gave me a headache that I had to use the emergency firmware recovery in kies to revert to stock and reset my flash count. Do try flashing in CWM recovery instead and see what's the result.
Sent from my GT-I9505 using xda app-developers app

[Q] Problem Installing TWRP and Rom on Epic 4G

I seriously can not figure out what I'm doing wrong. I'm going to be giving away my Epic since my friend broke his phone and I have the S4. However before that I want to install TWRP and the latest KK rom but everytime I do I brick the phone and have to restore it back to EL30 or FC09 and start over. I done this 4 times and I still can't get it to work properly. It roots fine but when I try to install a later rom or TWRP it doesn't work. Can someone help me out?
BUMP
Is there no one that can help me with this problem? I really want to get this cellphone working so I can give it off to my friend.
wich rom and wich twrp?
The epic 4g custom roms all have a recovery that goes along with the rom. The blu kuban rom has always been stable for me and if I recall correctly it has twrp along with it instead of cwm.
On second thought, are you talking about the sprint s2 non slider or the slider one?
Sent from my SM-G900P using XDA Free mobile app
@youdoofus
youdoofus said:
The epic 4g custom roms all have a recovery that goes along with the rom. The blu kuban rom has always been stable for me and if I recall correctly it has twrp along with it instead of cwm.
On second thought, are you talking about the sprint s2 non slider or the slider one?
Sent from my SM-G900P using XDA Free mobile app
Click to expand...
Click to collapse
Wait but if you already have a recovery installed wont it skip installing a new recovery? Because to root it I had to install CWM 5.0.2.7
It's the Sprint Epic 4G with the slide in keyboard. SPH-D700 if I recall.
@ernest-sora I have tried to install a few latest rom like The Schism Rom and Avatar Rom since those are KikKat based
Ahhhhh, I don't know anything about the slider one. I only have the non slider one. Sorry
Sent from my SM-G900P using XDA Free mobile app
---------- Post added at 04:13 PM ---------- Previous post was at 04:05 PM ----------
Sent from my SM-G900P using XDA Free mobile app
Oh I see. Well thanks for at least trying to help.
It's there anyone else who can help me with this problem?
Daslim Linol said:
Oh I see. Well thanks for at least trying to help.
It's there anyone else who can help me with this problem?
Click to expand...
Click to collapse
Rather than forcing TWRP...follow the instructions in this thread choosing MTD choice and then use the CWM recovery that will already be on the phone to flash your choice of ROMs. TWRP does not work with everything on this phone.
KennyG123 said:
Rather than forcing TWRP...follow the instructions in this thread choosing MTD choice and then use the CWM recovery that will already be on the phone to flash your choice of ROMs. TWRP does not work with everything on this phone.
Click to expand...
Click to collapse
This is the guide I followed to root. (As well as qbking77 guide) I tried both MTD and BML once I failed and it's the same problem. Once I flash your deodexed rom it works but if I try to flash a different rom it doesn't work or at least one of the latest rom. I know in Schism rom it said to update to the latest TWRP or CWM but when I try with CWM it doesn't work and if I try to install TWRP I end up bricking the phone which I have to restore again.
Alright I followed everything on the thread and used MTD again. I checked and I'm fully rooted. Now I'm gonna try to flash the rom I'm trying to flash. I'm assuming I should Wipe before installing the rom right? Since the stock and custom build are different.
Daslim Linol said:
Alright I followed everything on the thread and used MTD again. I checked and I'm fully rooted. Now I'm gonna try to flash the rom I'm trying to flash. I'm assuming I should Wipe before installing the rom right? Since the stock and custom build are different.
Click to expand...
Click to collapse
If you did not set anything up you do not have to wipe.
KennyG123 said:
If you did not set anything up you do not have to wipe.
Click to expand...
Click to collapse
It failed again. I did not wipe and for some reason it still does not work. Once I install the Rom from zip it says Checking State of BML/MTD and it reboots once it reboots it just stays on the Samsung Cyanogenmod screen. I waited for five minutes and nothing happens. Also sometimes when I do try it just stays in a black screen with the buttons at the bottom glowing.
Daslim Linol said:
It failed again. I did not wipe and for some reason it still does not work. Once I install the Rom from zip it says Checking State of BML/MTD and it reboots once it reboots it just stays on the Samsung Cyanogenmod screen. I waited for five minutes and nothing happens. Also sometimes when I do try it just stays in a black screen with the buttons at the bottom glowing.
Click to expand...
Click to collapse
Go back into CWM and format /system, format /data and format /cache and try again.

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