Develop Bugs

[Q] Unable boot to "Download mode"

Hi every one
i got my E988 OTA update , but it fail to boot up and Show "secure booting error cause boot certification verify"
i tried many method on this forum , but it not enter "Download Mode" and detect by the PC. Please advise anything i can try?
Thank you everyone :crying:

Make sure your drivers are installed.. Take battery out and hold both volume buttons and plug in usb
2SHAYNEZ

It took me a while as well to figure out the whole 'Download Mode' thing but it became easier once I got the technique down. This is my anecdotal evidence but I dont think you need to surely have drivers installed since I plugged it into my Linux machine and it still entered download mode.
This is the method I used.
1) Turn the device completely off.
2) With one hand, Hold down both Volume arrows on the device for about 3 seconds
3) Using your other hand, plug your device into your computer. (As in, already have it plugged into USB and plug the Micro-USB port into your phone)
4) And it should show 'Download Mode' on your phone.
Hope that helps!

Thank you all bro~
 @shayneflashindaily thank you ~I have install/reinstall every Driver,and also got same..
 @GreatCaesar: i tried your method , it got same result , still show "secure booting error":crying:

maybe its a bad cable.......

Dead Lg G3

So I bought a used G3 knowing about the issue it had; it didn't boot. I thought I could find a workaround to this but the phone doesn't boot, doesn't enter recovery or download mode. All the info I have is that when I take off the battery the pc sees it as an unknown device, while it's connected I press the power button for several seconds and it disconnects from the pc, reconnects after several more seconds of pressing the power button. Screen remains dead. Seller told me he had a perfectly working phone before he tried to root it and it never turned on again. One more indication is that the LED notification only flashed red a few times when I connected it to the wall charger and that was it. No LED working after that. I'm open to any suggestions though I guess I'm here for someone to tell me there's no hope reviving the device. Thanks in advance!

Same proble with mine but i bricked mines when update to lollipop and never turn on again . still waiting to some one help to revive my LG

If I come across any solution I'll post it here. In the meantime I've tried the following method on a freshly formatted laptop and I still get "Unknown Device" in Device Manager..
http://forum.xda-developers.com/showthread.php?t=2785089

same here
same problem, someone told me that if was the board or something like that and that it only can be fixed with a complete replacement of this, also, that it could be fixed with linux using comands to install .APK or .TOT.
linux sometimes sees it as Qualcomm CDMA Technologies MSM QHSUSB_BULK, using a virtual machine of linux ubuntu, windows 8.1 sees it as unknow device
LG dead since 3 months ago.................. i wasnt using the phone at all when this happended so........... :crying:

jc.delgado11 said:
same problem, someone told me that if was the board or something like that and that it only can be fixed with a complete replacement of this, also, that it could be fixed with linux using comands to install .APK or .TOT.
linux sometimes sees it as Qualcomm CDMA Technologies MSM QHSUSB_BULK, using a virtual machine of linux ubuntu, windows 8.1 sees it as unknow device
LG dead since 3 months ago.................. i wasnt using the phone at all when this happended so........... :crying:
Click to expand...
Click to collapse
I tried using a boot usb drive to see if ubuntu saw the device but it didn't. Maybe there's some things needed that I didn't do. The thing I don't understand the most is why do windows see it as an unknown device only with the battery out while if I connect the G3 with the battery on, it doesn't show anything on device manager..

Nubrig said:
So I bought a used G3 knowing about the issue it had; it didn't boot. I thought I could find a workaround to this but the phone doesn't boot, doesn't enter recovery or download mode. All the info I have is that when I take off the battery the pc sees it as an unknown device, while it's connected I press the power button for several seconds and it disconnects from the pc, reconnects after several more seconds of pressing the power button. Screen remains dead. Seller told me he had a perfectly working phone before he tried to root it and it never turned on again. One more indication is that the LED notification only flashed red a few times when I connected it to the wall charger and that was it. No LED working after that. I'm open to any suggestions though I guess I'm here for someone to tell me there's no hope reviving the device. Thanks in advance!
Click to expand...
Click to collapse
Hi there.
Please check these 2 threads out and see if any of it will help you. The one for the G2 can also be used for G3.
Here are the links:
http://forum.xda-developers.com/lg-g3/general/unbrick-lg-g3-qhsusbbulk-qualcomm-9008-t3072091 With this technique you would have to find the software online somewhere but this method does revive dead G3 with these symptoms.
http://forum.xda-developers.com/showthread.php?t=2475045
If I helped somehow, hit the THANKS button.
Good luck!

The thing is I can only get the device to be recognized as an Unknown Device in Device Manager and only with its battery out. If I keep 'volume up' pressed nothing happens, it's only shown after I simply connect the USB cable and it pops up after 10 seconds or so. It's very consistent in the way it behaves..

A small update, sometimes when I pull and put the battery again, I connect the phone to a pc while holding down vol- and the pc makes the connected usb sound while the phone led is blinking red for a couple of minutes, then it stops. That's about all there is concerning the phone giving signs of life..

Zenfone 2 does not turn on

Good morning, I have a big problem in my Zenfone 2 and would very much like your help.
Yesterday in the morning he hung up, I thought I had downloaded but I tried to turn it when he called saw the battery was at 50%, I found strange but ok, then the screen locked and the phone started to vibrate and I had to off it. When I called, the battery was at 50%, was saying that the phone was connected and there do not leave sound and saying he was carrying. I thought it might be the rom and turned it on PC to back up and exchange of rom, only the USB no longer recognized the connection to the PC. Was saying that tava carrying, I took the USB and stopped "load" when I called he carried again, just not giving connection to the PC. Anyway I did not back up and changed the rom, he continued the same thing (I was in the AICP (LP) and put the RussiaNBear (LP)).
So I was following a tutorial that I had used before to repair another error (I could not post the tutorial link here, but it's on youtube: (Tutorial - Zenfone 2 unbrick / Restore (ZE551ML / ZE550ML) - In the Droid Will channel)), but I gave soft to do so because the part of the AFT (Asus Flash Tools) it does not recognize the phone, having to disconnect the usb and connect again, and then I screwed me, 'cause the uSB connection was not working. After a few unsuccessful attempts, it seems I agravei even more the situation because now I turn the USB cable pressing volume down and it goes in "Moorefield" and the PC identifies a good, open the xFSTK and can pass the DNX, but when you finish spending DNX the phone should reboot and a screen appears with the symbol of a uSB connection, but that's not what happens. I spend the DNX, the phone restarts and vibrates, there is the xFSTK waiting to pass the OS, but not USB screen appears, the xFSTK does not recognize the phone more in "Moorefield" and I can not do anything else on the device.
I have already connected the phone on another pc, I have changed the cable and nothing. I think it is the mobile usb, if not it would not recognize the first part of xFSTK.
Apologies if I have not posted in the right place, for my English (Google Translate) and the text size, only tried to leave everything well explained so that everyone can understand. Thank you very much, beforehand to help you and I really hope we can solve this problem.
Thank you.

No one ?
no one can help me?

Asus zenfone 2 lost Bootloader. No display, no USB sign, no vibratio.

Help requested.
My Asus zenfone 2 ze550ml lost its Bootloader.
I used the xFSTK method.
Before going through the process, my phone was-
*Vibrating
*display was stuck at showing Asus logo in a white screen (that screen when you try to enter into the recovery mode) .
*Battery logo showing while plugged to PC or charger.
I used the xFSTK method first time. Following every single instructions.. And It probably showed "successful" for the first time!
But something definitely went wrong I don't know!!
And Now,
There is
*No vibration
*Display not turning on
*No USB sign while connecting to the PC.
But
ISOC is still detecting my device as "Moorefeild device" And so the xFSTK programme!
I am still trying to flash Bootloader using the xFSTK programme. But its failing.
Showing these from time to time
*Error encounter while FW download, Aborting
*firmware download skipped, continuing
And soany failure and errors!
Is there any other way I can fix this problem and regain Bootloader?
Please help me..
Thanks

Istiraven said:
Help requested.
My Asus zenfone 2 ze550ml lost its Bootloader.
I used the xFSTK method.
Before going through the process, my phone was-
*Vibrating
*display was stuck at showing Asus logo in a white screen (that screen when you try to enter into the recovery mode) .
*Battery logo showing while plugged to PC or charger.
I used the xFSTK method first time. Following every single instructions.. And It probably showed "successful" for the first time!
But something definitely went wrong I don't know!!
And Now,
There is
*No vibration
*Display not turning on
*No USB sign while connecting to the PC.
But
ISOC is still detecting my device as "Moorefeild device" And so the xFSTK programme!
I am still trying to flash Bootloader using the xFSTK programme. But its failing.
Showing these from time to time
*Error encounter while FW download, Aborting
*firmware download skipped, continuing
And soany failure and errors!
Is there any other way I can fix this problem and regain Bootloader?
Please help me..
Thanks
Click to expand...
Click to collapse
put device on charge overnight. then open back panel and disconnect battery connector. leave it disconnected for the day and try again other day.

Thanks
But how do I know if the battery is charging?
I mean the display isn't turning on or even showing any kind of notification.
Okay doing as you said.
And I hope this method works!
Crossed my finger.. !!!
(And one question , is it usual to have this kind of problem that I am facing now?)

Istiraven said:
Thanks
But how do I know if the battery is charging?
I mean the display isn't turning on or even showing any kind of notification.
Okay doing as you said.
And I hope this method works!
Crossed my finger.. !!!
(And one question , is it usual to have this kind of problem that I am facing now?)
Click to expand...
Click to collapse
yea it is somewhat common. and so far zenfone 2 is much easy to unbrick or recover comparing to other devices. well if you pur on charge after few minutes it will get warm. but if put on long and battery is charged then you will not be able to know as it will be cold. you can check battery voltage if it is above 4 volts means battery is more than 80 percent

Oneplus 3 just died out of no where

So i was using my phone and decided to restart it after updating my adaway files but my phone never turned back on. The two press the power button screens did not show up either. I tried to uses the MSMdownload tool since i thought my phone was somehow bricked but that didnt work either, it just kept restarting the download process after everything was completed. my computer makes a sound when its connected and it connects correctly as a quallcomm 9008 device but even after all this nothing is working. has anyone experienced something like this or does anyone have any advice?

did you try to long press both power button and vol up ...you should feel a vibration...
maybe it's not turned of maybe it's error causing the screen to be off... also is there any heat?

Which method of the unbrick tool did you use? First or second? If the first, then maybe you should give the second also a try.
Sent from my ONEPLUS A3003 using Tapatalk

I've tried everything and I used th me second method yet nothing happened. I can see my phone get recognized by the computer and get listed on the MSN device list yet nothing happens after it finishes the process. After the green line shows up telling me that it's completed everything the process restarts writhing a few minutes unless I unplug it. No vibration no nothing the phone just died on me after I restarted it .

Try doing MSM on a different PC with all drivers installed , hope it helps

Try to repeat flashing again, there is no other way. Use method 2only. Extract tool again and try flash.

When I was used Xperia Z1, I bricked my phone with a soft brick. So I installed driver in my PC and flash Kernel though FASTBOOT(ADB) either it's not show Device in my PC (I show just "Unknown Device").
After that my phone can connect to my PC again (Now It shown C9303 or something that meant it know it's a phone).
So I can flash by Flashtools again. Soft brick is not scary as Hard brick, you'll find some way to bring it back easily.
Hope this help!
PS. Bricked Phone is WEAK in Battery, always connect it with charger.