[LG KS20] after flash ROM, can't plug on USB cable - Upgrading, Modifying and Unlocking

I upgraded my LG KS20 phone, and after re-boot, I plugged on my USB cable
with KS20 to PC...terrible thing happened.
the desktop was gone and re-boot with "LG" logo, and then .....
a "slide on battery" message shown, and then powre off automatically.
i can't boot it by press the power on button, unless the battery off and on.
still , i can power on under the condition without USB cable plug in.
I can't restore my NV file, only under the emergency mode and ROM re-flash.
anyone can solve this ?
thanks.

Related

Usb cord came unplugged while updating rom tmobile dash.

The device is stuck in the windows mobile boot screen. Tried to do a hard reset but didnt do anything still stuck. Tried to get to boot screen didnt work by holding camera button but when took out battery and fired up with usb went to the tri color screen but would not connect to pc. How can I unbrick this?
1. Turn your phone off by removing the battery.
2. Put the battery back in.
3. While pushing down the camera button and holding it down, plug the usb cable in (while the other end is plugged into your computer)
4. You should see the tri colored screen and USB somewhere at the bottom. If it says "Serial" something's wrong.
5. Find a STOCK ROM for your phone, and flash it. Make sure it's an official upgrade exe, not some cooked ROM.
6. After all that's done.. proceed to flash the ROM of your choice.
To make sure this doesnt happen again, I would recommend the "hard spl" linked in the second or third post of my ROM thread (in my signature).

[Q] [Help] Defay dead - what could be the reason and how to rescue?

I've owned the DEFY for over two months, it is rooted but not flashed. Installed many apps and it had been working fine.
Today it suddenly go black when charging. Then, when pressing the power button, nothing happened. At first, when it was plugged into the PC USB port, the white LED was on. But later on, even the LED was always off.
Connected to PC via the USB cable, take the battery off and put it on again, the USB connecting and disconnecting sound was played on the PC. The Windows XP hardware manager briefly showed "Motorola USB device" and then it disappeared.
The screen is always black. Nothing seems to happen when pressing the power button, power+volume up, or power+volume down.
Please help!
I borrowed another DEFY and charged the battery to 100%. The problem persisted. The battery is good, for it can be used with the other DEFY.
Did you overclock your Defy? If yes, this might be your answer!
No. It has never been over-clocked. Just normal usage all the time.
If it can't even get to the recovery (hold volumn down) or bootloader (hold volumn up) screens, there's probably nothing can be done other than sending back for repair.
DEFY won't start after Flashing Chinese Froyo ROM
Hi,
I have the same problem: tried to flash Jboogie3 BlurlessGinger(2/16/2011).
Donwloaded the chinese rom from this thread: http://forum.xda-developers.com/showthread.php?t=895448
Flashed with RSD Lite: Result was "finished" and "PASS".
Pulled out the USB-Cable, LED light went off, but nothing happend.
Tried to reboot but no reaction from my DEFY. Even after pulling out the battery.
No Recovery Boot and no Bootloader Mode. :-(
Can anyone help please.
Thanky you in advance,
hartmuna
--------------------------
Hey guys,
luckily RSD was still able to connect to my DEFY even though it seemed dead. I reflashed the PL Froyo rom and it booted up smoothly. So be aware of the chinese rom!

Bricked G3 stuck at "Factory Reset Status"

When using LG Flash Tool to flash a .tot file, everything went smooth till it boots MiniOS and Shows the blue screen "Factory Reset Status"
Now I can't seem to get beyond this level
I check that it's COM41, using the original cable, plugged to a USB 2.0 port, rebooted PC, etc, but it's stuck at "Waiting For connection when trying again".
Can anyone help me boot successfully?
When you're at the AAT mini OS screen, you need to hold down the power button and select Normal Boot.

Water damaged OP3 only shows Tux at boot for 3 seconds (hard brick?)

Hello,
I've got a water damaged OP3 (it was in a pool for about 1min). Now after a few days having it in a pot of rice and cleaning the logic board with 100% isopropanol it finally woke up when pressing power button.
My problem now: It just shows up with a Linux Logo (a small Tux in the middle of the screen) and then turns off after 3 seconds. If I connect it with a charger, the screen persists for the moment.
When pressing + holding volume up button, windows recognizes it as "unknown usb device" and screen stays black.
I only need to access the flash to rescue some of my recent (of course not backed up) data.
What do you suggest? Could I try the unbrick the phone or do these symptons point to a irreversible hardware damage?
Is there a way to read the flash without flashing (or with flashing a minimum set of) stock image?
best regards and thanks in advance!
Contact a software technician
juuz said:
hello,
i've got a water damaged op3 (it was in a pool for about 1min). Now after a few days having it in a pot of rice and cleaning the logic board with 100% isopropanol it finally woke up when pressing power button.
My problem now: It just shows up with a linux logo (a small tux in the middle of the screen) and then turns off after 3 seconds. If i connect it with a charger, the screen persists for the moment.
When pressing + holding volume up button, windows recognizes it as "unknown usb device" and screen stays black.
I only need to access the flash to rescue some of my recent (of course not backed up) data.
What do you suggest? Could i try the unbrick the phone or do these symptons point to a irreversible hardware damage?
Is there a way to read the flash without flashing (or with flashing a minimum set of) stock image?
Best regards and thanks in advance!
Click to expand...
Click to collapse
you better avoid doing experiments on op3. Symptoms you have mentioned in your thread, tells that your has been flashed (don't have usb drivers,no os,no firmware). I have faced same problem with my letv le 1s. It is a software problem. Your phone is totally empty. So do contact with any software technician, he uses sp flash tool to wake up the device. Download sp flash tool and follow procedure. If sp flash tool is detecting your device then it means your device hardware is fine.
juuz said:
Hello,
I've got a water damaged OP3 (it was in a pool for about 1min). Now after a few days having it in a pot of rice and cleaning the logic board with 100% isopropanol it finally woke up when pressing power button.
My problem now: It just shows up with a Linux Logo (a small Tux in the middle of the screen) and then turns off after 3 seconds. If I connect it with a charger, the screen persists for the moment.
When pressing + holding volume up button, windows recognizes it as "unknown usb device" and screen stays black.
I only need to access the flash to rescue some of my recent (of course not backed up) data.
What do you suggest? Could I try the unbrick the phone or do these symptons point to a irreversible hardware damage?
Is there a way to read the flash without flashing (or with flashing a minimum set of) stock image?
best regards and thanks in advance!
Click to expand...
Click to collapse
Have you installed the necessary drivers in Windows for the phone to show up as Qualcom HS-USB..........Loader9008? Otherwise your phone will not be recognised when you do volume press for 10 seconds and connect. Even if it is recognised in this "service" mode, you may be able to unbrick/restore your phone but in the process, the entire phone would be wiped clean. (I know since I have done it).
tnsmani said:
Have you installed the necessary drivers in Windows for the phone to show up as Qualcom HS-USB..........Loader9008? Otherwise your phone will not be recognised when you do volume press for 10 seconds and connect. Even if it is recognised in this "service" mode, you may be able to unbrick/restore your phone but in the process, the entire phone would be wiped clean. (I know since I have done it).
Click to expand...
Click to collapse
I've tried to get the phone into EDL Mode (Qualcomm chip), but had no success, phone vibrates and windows recognizes an "unknown usb device" (pressed Volume Up and connected to USB, phone was definitely turned off). But I am not able to get the device recognized as "QHSUSB_BULK" which - afaik - is the prerequisite to install the Qualcomm USB Driver und go on with the unbrick procedure..
I hope anyone got some idea how to get the phone back to life..
juuz said:
I've tried to get the phone into EDL Mode (Qualcomm chip), but had no success, phone vibrates and windows recognizes an "unknown usb device" (pressed Volume Up and connected to USB, phone was definitely turned off). But I am not able to get the device recognized as "QHSUSB_BULK" which - afaik - is the prerequisite to install the Qualcomm USB Driver und go on with the unbrick procedure..
I hope anyone got some idea how to get the phone back to life..
Click to expand...
Click to collapse
Your understanding of the unbrick steps is not correct. Initially the phone will not show up at all or may show up as unknown or something else. It is only when you install the EDL mode drivers and then hold the power button down for 40 seconds and the hold down the volume up button for 10 seconds and connect to PC, will it show up in the EDL mode. Ofcourse you will have to disable the driver signature verification before installing the drivers.
Read the Unbrick Guide again and install the drivers before trying to connect.
tnsmani said:
Your understanding of the unbrick steps is not correct. Initially the phone will not show up at all or may show up as unknown or something else. It is only when you install the EDL mode drivers and then hold the power button down for 40 seconds and the hold down the volume up button for 10 seconds and connect to PC, will it show up in the EDL mode. Ofcourse you will have to disable the driver signature verification before installing the drivers.
Read the Unbrick Guide again and install the drivers before trying to connect.
Click to expand...
Click to collapse
Thanks so far, but being a software developer myself I am not a totally beginner. I followed the guide, also read it twice etc.. Also tried another USB cable including the original Oneplus cable.
When plugging it in while pressing Volume Up my Linux laptop reports this:
Code:
[40474.458362] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40475.426231] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40475.426354] usb usb3-port2: attempt power cycle
[40476.710061] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40477.677934] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40477.678051] usb usb3-port2: unable to enumerate USB device
On my windows machine the device manager reports "Windows has stopped the device because it has reported problems. (Code 43)".
Any suggestions? It seems that the device has lost all firmware etc. and there is no EDL left on the device.
EDIT:
With holding Vol(-) and Power I could get rid of the Tux Penguin and enter fastboot and recovery of the phone.. NAND seems to be okay, can decrypt my internal storage.. The USB port doesn't work in recovery (same error like I had with the EDL mode, unknown device)..
I hope I can now charge the battery a bit and recovery my data...
Thanks so far guys..
juuz said:
Thanks so far, but being a software developer myself I am not a totally beginner. I followed the guide, also read it twice etc.. Also tried another USB cable including the original Oneplus cable.
When plugging it in while pressing Volume Up my Linux laptop reports this:
Code:
[40474.458362] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40475.426231] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40475.426354] usb usb3-port2: attempt power cycle
[40476.710061] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40477.677934] usb usb3-port2: Cannot enable. Maybe the USB cable is bad?
[40477.678051] usb usb3-port2: unable to enumerate USB device
On my windows machine the device manager reports "Windows has stopped the device because it has reported problems. (Code 43)".
Any suggestions? It seems that the device has lost all firmware etc. and there is no EDL left on the device.
EDIT:
With holding Vol(-) and Power I could get rid of the Tux Penguin and enter fastboot and recovery of the phone.. NAND seems to be okay, can decrypt my internal storage.. The USB port doesn't work in recovery (same error like I had with the EDL mode, unknown device)..
I hope I can now charge the battery a bit and recovery my data...
Thanks so far guys..
Click to expand...
Click to collapse
Sorry if I had sounded condescending, but I had no way of knowing your level of expertise.
Best of luck for restoring your phone or for saving the data.
tnsmani said:
Sorry if I had sounded condescending, but I had no way of knowing your level of expertise.
Best of luck for restoring your phone or for saving the data.
Click to expand...
Click to collapse
No need to worry.. Of course, you couldn't know and there are a lot of people asking dump questions..
My phone is back a life, I guess the data transfer via USB is not working anymore, charging works although I needed to take my Oneplus One's battery (identical connector, just need to take care of the pin layout [+/-]) because my OP3 battery is pretty low and I don't know if I can reactivate it.. It has about 3,4V at the moment and charges very slow..
Finally, if anyone else faces this issue and can't boot his phone:
Try different button combinations and keep holding the buttons several seconds/minutes..

Samsung Galaxy j6+ -

Hello,
I have a similar problem as iddik who is a senior member of this forum who have posted his query on the 30th of October, 2019..
See below is his post...
I have a problem with my phone : Samsung J6+ (SM-J610FN/DS)
I have crached a flashing Rom with Odin and I'm sure it is because of that my phone can't start by pressing the power button.
Now my phone has the message : An error has occurred while updating the device software. Use the emergency recovery function in the smart switch PC software ...
The thing is that it is rebooting and looping without end every 2 seconds on that green screen with that message ...
Only thing I can do is, with the USB cable connected, when the green screen is up, I can push VOL down + VOL up and I can go in download mode.... Then I can push on VOL up but right after the phone reboot in loop again and again ...
Another thing is that without USB cable connected I can't start the phone.
What can I do ?
First thing, I can't start my phone if it's not connected with the USB cable.
Second thing, when I connect my phone with the USB cable, it starts automatically even if I didn't push the power button and it's looping and blinking and rebooting endlessly.
Also the phone don't seems to know how charging himself when USB cable connected.
Is it a Bricked Samsung phone ?
If it is, how unbrick it ?
When you are in download mode, click on power button and volume down button, After the black screen appears or Samsung logo appears, leave the power button. You will get into Phone main settings. then after that factory reset the phone. Everything will start working again. (This happened to me as well.)

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