Phone screen black, fastboot loads ok. - GT540 Optimus General

Hi guys,
I recently tried to flash a rom on my phone and when the process was done, all I got was a black screen.
Fastboot still works and I can flash euro roms like on the tutorias fine but the phone simply wont boot.
I can go into emergency mode to flash in it in KDZ, the flashing works fine but still, the phone only displays a black screen.
When I press the power button it vibrates, the PC recognizes the device fine, so I know the phone isnt bricked, I just cant get it to display anything on the screen! please help!

Which rom did you try ?

Using swiftdroid RC4 2.0, but I found out what the problem was. Since on flashboot factory reset was in German, "reset und wipe" or something like that, I did not check it. Reflashed it and it is now working, the only problem is taht tehre are no boot animations whatsoever. only a black screen between pressing the button and going into android. any fix for that?
thank you for the replies!
EDIT: Also, by going into reboot > Recovery, nothing is displayed. this only happens on boot. I flashed originally with Euro+fast.kdz, and that is when this problem begun.

Flash this boot.img
and for the recovery, ace you installed??

I installed CWM for recovery, if that is what you asked.
Going to try to flash it and let you know, hope it does break anything
EDIT: nothing. No boot images. Going to leave it alone until I need it for something. I use an X10 mini, I just bought this phone for testing. Not liking the resistive screen!

you tried to flash an X10 with Rc4 ?

No, I have an X10 which is my default phone, I boght this optimus for testing, I flashed RC4 on the optimus, not the mini. not that stupid

You're not the only one with this problem, this will fix it.
http://forum.xda-developers.com/showpost.php?p=10238074&postcount=41

Did you tried with another ROM ?

Yep, follow this... since I can't post links, I can't help......

Related

[Q] HTC Wildfire bricked? need help /will give reward

hello i just wanted to see if i still could get help with my useless device
Ok so yesterday ive rooted the phone and today i tried to install cyanogen mod 7 rom
i used rom utility which i ve downlaoded from android marketplace
now sometimes my phone boots and gets to the logo loop
ive heard that clearing cache and settings would work but i cant access these menus as my hboot is not reacting to my key presses , i tried to reflash the phone but nothing came with success.
I used android sdk and RUU but nothing with success .
maybe anyone would teamview me or give me step by step tutorial how to get this phone alive again would be appreciated
You will be rewarded
You rooted the Phone with a App from the Market?
You need if your HBoot is lower then 1.* the unrEVOked Tool.
If its 1.* there is no way to flash it.
Okay, maybe it worked with yout root app from the market, dunno, but i dont think so.
So you cant access while pressing volume down (keep holding) and switching on the phone the bootmanager? oO thats no good.
The Logo will stay up to "15minutes (<-?)" after flashing a new Rom. In this time its possible, that you Phone restarts automaticly. its normal. Switch it on an wait up to an half hour. If it keep staying in the boot sequence while showing the logo you got a problem .
I think there isnt a more unsave way than a "Flash by teamviewer". You have also pay attention to the phone while flashing. on TV you cant keep an eye on it.
But how can you reflash your phone without getting access to the bootmanager/ HBoot? I think you habe to access the clockwork to flash cm7 *thinking*.
If u nowhow to use adb try n get a adb logcat if possible
Sent from my HTC Wildfire using XDA App
Hi borris and daddyspud thanks for your reply ,i cant move around in hboot ,my hboot version i 0.80.0003
Ive rooted it using unrevoked with clockwork mod on it.
now even when i get it to boot it just loops in cyanogen animation,should i leave it for 15 minutes to do its thing?
also im new to this so i dont know anything about sdk and adb,all i did is saw the tutorials using it ,so i thought i would use it just to give it a go
HBoot 0.8 is rootable, so its okay.
If there is still an animation while you see the CM Logo everything is fine.
If it freeze for some minutes is there a problem. The Animation shows you "i am working / installing".
Yes, let him do his thing for some Minutes.
I think everting should be okay and after some minutes it will work like normal.
It reboots sometimes it self, but this is also okay.
I dont know... does the new CM7 also install a new HBoot? So its possible why you cant move around in it.
Do you wait about 10 seconds before you try to move around in it? Because in the first seconds it looks like it freezed an then it start a test or something. this takes about 10seconds then you can use it.
Its not bricked if its turning on.
Can you get into recovery? If you can try flashing the 4.1 kernel.
If that doesnt help, go into recovery and do a full wipe. Clear cache and dalvik, and under partitions menu format everything except SD card. Then flash CM7, then the 4.1 kernel
Remember first boot will take 10-15 minutes. Be patient. If youve done everything right you shouldnt have any problems
Hi and thanks for cooperation ,i left my phone on cyanogen animation for an hour and nothing is happening just animation loop constantly.
I've just tried hboot and it searches for the PC 49 DIAG and says not found after that it freezes and i cant use any menu navigation buttons . in hbot and fastboot.
I dont even know what to do next
Much help appreciated guys
oO
thats weird.
the PC49DIAG is a part of the rom it self. So i think you have to try to re-flash it. Did you try it with or without a goldcard?
before you flash your phone whipe ALL datas on it!!!
If i start in bootloader mode i get also all the "missing" errors but i can still use the vol up/down buttons to navigate around.
That should help.
I think you did something wrong while flashing.
the root failed?
you got an error while flashing?
goldcard?
Try to flash a RUU from shipped roms. DONT flash a Froyo rom, you will get the HBoot 1.* if you do this.
Recoverymode doesnt work in the hboot?
If you try recoverymode you will get a blackscreen with an triangle.
most say "press the power button" to enter the recovery mode. if this doesnt work press the "volum up button (hold it) then the power button" this should enter recovery mode.
**EDIT**
http://shipped-roms.com/index.php?category=android&model=Buzz use a www-rom its without a branding. and use a RUU rom.. and pls dont use a froyo rom. after flashing this your root is gone i think but your phone will be alive again.
dont try the cm7 this time. use a stock rom.
is it alive again?
i talked today to someone who hat exactly the same problem like you.
it was simple to fix the problem... he (you also?) didnt
whipe the phone before he flashed the cm7. thats why it wont stop looping
in the cm7 animation.
after whiping and reflashing everything was fine.
... did you whipe it b4 flashing?

[Q] Magic 32a Flashing problems

Hey you guys
I recently installed amon ra's recovery v. 1.7 on my magic 32a (radio 6.3.5 something) after I rooted my phone, of course.
Now, I thought that with the new recovery I would be easily able to flash a custom rom onto my magic. This was however not so easy, because the recovery behaves in a very weird way. Whenever I tell it to flash a new rom from a .zip image, or wipe the phone, or anything, it just reboots my magic and thats it. Also, the recovery happens to freeze quite regularly when I don't act very quickly. E.g. when I boot into recovery mode and don't touch the phone for the first 5 seconds, it wont respond any longer.
So, I'm probably doing something wrong here. I would appreciate any help from anyone. (and btw, i have the official android 1.5 sense rom installed on my magic, os I cant use rom manager either, since it only supports android 1.6 upwards.)
Look at the root guide in my signature..
Do step 0, 1, 2, 5 and 7 only.
It should flash the recovery partition one more time.
Hopefully it will fix your problem :0)
mumilover said:
Look at the root guide in my signature..
Do step 0, 1, 2, 5 and 7 only.
It should flash the recovery partition one more time.
Hopefully it will fix your problem :0)
Click to expand...
Click to collapse
hey, thanks for the quick response. I still have a few questions though, since I am quite a newb. So when I type all of those commands into cmd, doesnt my device need to be connected to the computer somehow? I read somewhere earlier that I simply connect it using the "mount" funtion, the problem is that that doesnt seem to work anymore for my magic, because after I hit "mount" it simply goes back to "usb connected" without acutally mounting. So ..how do I connect the device to the PC while entering the commands?
ok... my bad..
Try to read the ENTIRE guide... then do the steps i mentioned above :0)
Don't mount it... just connected... but again.. read the guide.
thanks a lot
I didnt use your method to flash the image, but the hero recovery works way better than the one I had before. I managed to flash a rom now. So happy ;D
ok i think i just did a bad mistake
i installed rom manager after i had flashed an android 2.1 rom on my magic. THen i told it to flash some rom from my sd card and also wipe some data, or something. Now my magic gets stuck on the magic bootscreen, like it keeps looping. Did i brick my phone ..or is there a way to fix this? please help me, (
most likely is that the rom you flashed doesn't have a compatible kernel for your phone.
Just boot into recovery and flash a rom that is compatible.
cant boot into recovery ..it just keeps looping
Then you will need to boot into fastboot and reflash a working recovery.
Clockwork has issues flashing the clockwork recovery sometimes.
to boot into fastboot i need to hold power and back, right? ..that doesnt work either. again, it just keeps looping.
so, guys ..did i brick my phonne..?? :S
da robat said:
to boot into fastboot i need to hold power and back, right? ..that doesnt work either. again, it just keeps looping.
Click to expand...
Click to collapse
you're probably not doing it right. you should still be able to get into recovery or fastboot and install a different recovery. i'm using RA-magic+v1.7.0.1 recovery it has bugs but pretty stable.
so what am i doing wrong??
just realized when i connect the phone to my pc over usb and then boot it, it connects to the pc for a second or less and then disconnects again. Dont know if this helps anyhow.
pull battery, put battery back in. hold back and push power.
Should be good.
tried that like 50 times. phone just keeps looping ..like, it restart over and over again.
What you have is what hundreds before you had when they used Rom manager.
The system will not boot into anything.
My advice is to never use Rom manager for 32A device.
The fix:
Keep pushing the back button while the system reboots... just mash the **** out of it..
I helped out someone before you, and he did it for over an hour or so...
It's a timing issue...
Good luck
haha ..so is there still hope?
cheers for all the answers ;D
i do have one question though, actually.
Shall i just press the back button continuously ...while it keeps looping, or should i rather restart the device after each loop and hold the back button?
just mash the back button.

Screen does not turn on

Hi
I have a problem with my sgs.
Since yesterday the screen does not turn on anymore.
I tried everything. I even flashed a new firmware with odin. Nothing happens. Then the same with KIES but still the screen is black. The phone works. But with normal boot, download mode and recovery I can't see anything.
So now I wan't to try a full reset. And this is the point where I need your help. I flashed the speedmod kernel. And I want to boot into recovery and do a hardware reset.
Could anyone of you post screenshot from the recovery menu so I can navigate through it. And please tell me what vol up / down means in the navigation. That would be fantastic.
Thank you all for your help
hey dude can u tell on which rom where u in past before this happened??
the rom was the official samsung rom. updated with kies.

Stuck on clk loading screen

Hi folks, my HD2 just went south. whenever I try and boot the phone it just sits at the CLK loading screen, I can access it with fasboot, but not ADB. I have tried to re-flash recovery, and to boot it from files on my PC, but it then just stops at 'cmdline:'. No matter what button combination I try it just goes to the CLK screen, even hard reset.
Does anyone have any idea how to get past this ?
have you installed CWM or any rom on the phone ?
Yeah, I have CWM & CM7 nightlies. I can still flash recovery as fastboot works at this stage, but I cant get the phone to boot to any other stage, ie the rainbow screen. I am actually begining to think that I have a hardware issue, possibly relating to the button cable or so.
stuck on cLk loadning screen
UbuntuBhoy said:
Yeah, I have CWM & CM7 nightlies. I can still flash recovery as fastboot works at this stage, but I cant get the phone to boot to any other stage, ie the rainbow screen. I am actually begining to think that I have a hardware issue, possibly relating to the button cable or so.
Click to expand...
Click to collapse
this my 3th phone with the same issue. never got a good answer.

[Q] bricked? i just dont know

I've been rooted for quite some time now, was always using axiom, today I decided to try something new, I flashed via twrp ROM and gapps, twrp said no root, installed superuser? I swiped yes, phone booted to Google screen, but now is the stupid part,
Keeps boot looping there, absolutely no boot loader when trying to boot into it, computer won't read device, just says android with a yellow exclamation mark and says the drivers are incorrect or something, I cannot fast boot because of this, when trying to enter boot loader it just gores to Google screen goes black then flashes red light,
Is this fixable? Will JTAG work maybe (last resort), anybody who has the time to help will be my hero haha, I work in a few hours so I won't be back until the afternoon, but please anyone!
Oh and phone isnt unresponsive, still vibrates, still charges and still boots google logo,
Just remeber i cant flash stock img files due to not being abke to use fastboot:/ unless there is a way to get the computer to read my phone
Thanks in advanced to people who reply,
joshracine1 said:
I've been rooted for quite some time now, was always using axiom, today I decided to try something new, I flashed via twrp ROM and gapps, twrp said no root, installed superuser? I swiped yes, phone booted to Google screen, but now is the stupid part,
Keeps boot looping there, absolutely no boot loader when trying to boot into it, computer won't read device, just says android with a yellow exclamation mark and says the drivers are incorrect or something, I cannot fast boot because of this, when trying to enter boot loader it just gores to Google screen goes black then flashes red light,
Is this fixable? Will JTAG work maybe (last resort), anybody who has the time to help will be my hero haha, I work in a few hours so I won't be back until the afternoon, but please anyone!
Oh and phone isnt unresponsive, still vibrates, still charges and still boots google logo,
Just remeber i cant flash stock img files due to not being abke to use fastboot:/ unless there is a way to get the computer to read my phone
Thanks in advanced to people who reply,
Click to expand...
Click to collapse
It happned with me too when its reboot to google logo before that press vol down and power button to get into bootloader

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