Database Users

[Q] Vega - soft bricked? No boot mode.

Hi Everyone,
I know its a few threads about how to unbrick Advent Vega and how many threads is that many ideas how to do it.
I was running ViewCOMB 3.2 built 5.1 and everything was ok, but ive installed Rom Manager from Market, and tried other rom (wrong one ).
After reboot nothing is happening, i mean when i press power button for ok 10 sec and then short press again, screen is on black with backlight for about 1 sec and keep coming off.
Ive tried to turn into boot mode (2sec. back + 2 sec. power) about 1000 times already with power cable on and off, but nothing happening.
I have drivers installed on my laptop (had installed custom rom already).
I want to specify a few facts:
Is battery must be charged to full? or should start another try from flat?
If so, how to drain battery if tablet wont power up?
Is better to try with power cable on or off?
Some people saying about holding buttons for a 2 sec, other for 1 sec, what is right?
Any ideas?
Many thanks!

Finally after hours of pressing and holding power + back buttons I've sorted it.
- hold power button for about 10 sec. (to make sure device is off)
- hold back button 2 sec. (don't release)
- press power button till notification sound will come on.
Then had notification sound from Windows about new device connected. On my device list was Nvidia usb boot-recovery device.
Before last try I've charged battery to full (blue light) then disconnected power cable. I couldn't do it with battery full and power cable in (strange).
I think the main hint is to make sure that device is off. Ive noticed that even if screen is off device might be running.
Hopefully this little explanation will help

okti said:
Finally after hours of pressing and holding power + back buttons I've sorted it.
- hold power button for about 10 sec. (to make sure device is off)
- hold back button 2 sec. (don't release)
- press power button till notification sound will come on.
Then had notification sound from Windows about new device connected. On my device list was Nvidia usb boot-recovery device.
Before last try I've charged battery to full (blue light) then disconnected power cable. I couldn't do it with battery full and power cable in (strange).
I think the main hint is to make sure that device is off. Ive noticed that even if screen is off device might be running.
Hopefully this little explanation will help
Click to expand...
Click to collapse
THAAAAAAAAAAAANNNNNKKKKK YYYYYYYYYOOOOOOOOOOUUUUUUU!!!!!!!!!!!!!!!!!!! I had the same problem and I thought it was bricked for like, 4ever, so THNX!!!

i had exactly the same problem last night when i asked CWM to do a backup and the screen went black and wouldnt switch on.
one way to tell if it hasnt powered off properly when its stale booting is to look under the black surround between the screen and the camera and you may see a faint blue light. Only viewable with about 5 deg viewing angle (so same as the screen LOL)
i found i could not get it into boot mode at all. No matter how many times i did it. Ending up taking the back off and pulling the battery and then trying again - guess what? Worked straight away first time!!!
I can only presume that when its in this stale boot state it isnt shutting down properly, even if the light is off etc. Although i did come across a post after sorting it that said sometimes it can take a 60 second press of the power button to properly shut it down when its in stale boot.
So now i'm back to standard modded stock rom 2.2 and its horrendous!!!!
Just finished downloading the beta ics rom exe - so gonna whack that on and have a play! Hope its as good as they say it is. If it isnt, then i'll put honeycomb back on.

I think that instead of pulling tha battery out you could also press and hold the power button for 9 seconds, right?

Really slow!

So today i booted up my pc again sony vaio vpceb4l1e with windows 8, and it was so slow when i boot it up enter my password after around 2 minutes it completly locks up then i have to press the power button untill it shuts off.
I tried at boot pressing shift+f8 and it said automatic system repair then said windows could not boot corectly so i pressed restore what happend it showed me the windows 8 logo and that's it nothing else for more than a couple of hours
how do i fix this

phone won't boot/start up

I have a at&t S4 that all of a sudden today stopped working. When I restart the phone by taking the battery out and putting back in, it gets stuck on the Samsung Galaxy S4 logo and then a black screen. I tried going to recovery mode(volume up + home + power button), and it shows recovery booting in blue for a sec then goes black. I tried for download mode the warning comes up but after pressing volume up it goes black. I really don't know what to do at this point.

Tried using kies or smart switch to perform a firmware recovery?

Yes, the computer doesn't recognize that the phone is connected. It's as if when the phone goes to the black screen its actually powered off. The only time I get anything from the phone is when I pull the battery and reinsert it.

bubba9004 said:
I have a at&t S4 that all of a sudden today stopped working. When I restart the phone by taking the battery out and putting back in, it gets stuck on the Samsung Galaxy S4 logo and then a black screen. I tried going to recovery mode(volume up + home + power button), and it shows recovery booting in blue for a sec then goes black. I tried for download mode the warning comes up but after pressing volume up it goes black. I really don't know what to do at this point.
Click to expand...
Click to collapse
When the phone battery are too low, the phone could behave like that too.
Do you know that battery is fully charged or has more than 60%?
If not charge the phone first.
Plug the charger. If you did not see any sign showing that you phone is charging, press and hold the power button for 10 sec and release it. You should see the phone charging image.
Let me know whether your phone has enough battery power left but showing the above mentioned problems.

sway8966 said:
When the phone battery are too low, the phone could behave like that too.
Do you know that battery is fully charged or has more than 60%?
If not charge the phone first.
Plug the charger. If you did not see any sign showing that you phone is charging, press and hold the power button for 10 sec and release it. You should see the phone charging image.
Let me know whether your phone has enough battery power left but showing the above mentioned problems.
Click to expand...
Click to collapse
Yes, the battery is fully charged. I have another S4 Active that I've swapped the batteries with, along with a spare official Samsung battery and charger. It doesn't matter which battery I use, the phone acts the same with any of the 3.

bubba9004 said:
Yes, the battery is fully charged. I have another S4 Active that I've swapped the batteries with, along with a spare official Samsung battery and charger. It doesn't matter which battery I use, the phone acts the same with any of the 3.
Click to expand...
Click to collapse
If you have enough battery power left but the phone was behaved like that, you might need to flash the firmware.
Are you in lollipop or kitkat? For the time being, the only firmware available for kit-kat and lollipop is NB1 firmware cooked by muniz_ri . You can get it from here.
You mentioned that you can go to download mode but the phone shut off when you press volume up to go to the download mode after the warning.
Try the 10 sec method. Go to the download mode (power+home+volume-down) but keep holding the power button for 10 sec even though you see the warning message appear. Then you press volume up to go the download mode. Try this way and let me know.

sway8966 said:
If you have enough battery power left but the phone was behaved like that, you might need to flash the firmware.
Are you in lollipop or kitkat? For the time being, the only firmware available for kit-kat and lollipop is NB1 firmware cooked by muniz_ri . You can get it from here.
You mentioned that you can go to download mode but the phone shut off when you press volume up to go to the download mode after the warning.
Try the 10 sec method. Go to the download mode (power+home+volume-down) but keep holding the power button for 10 sec even though you see the warning message appear. Then you press volume up to go the download mode. Try this way and let me know.
Click to expand...
Click to collapse
It was on Kitkat. I can press the volume up and get it to show the download android screen but it immediately shuts off. Holding the power button for 10 secs. and then the volume up didn't do anything. The phone shuts off after 1-2 secs. of doing anything.

bubba9004 said:
It was on Kitkat. I can press the volume up and get it to show the download android screen but it immediately shuts off. Holding the power button for 10 secs. and then the volume up didn't do anything. The phone shuts off after 1-2 secs. of doing anything.
Click to expand...
Click to collapse
That is strange. The same thing happened to me. But I avoided the phone shut down by 10 sec methods.
Just hold the power+home+volume down for 10 sec, even though the warning sign show up, and then let it go all of them. Plug the phone to the computer and then press the volume-down to go into download mode. It works for me. Not on the first try though.
Try doing that with batter charger plug in too.

sway8966 said:
That is strange. The same thing happened to me. But I avoided the phone shut down by 10 sec methods.
Just hold the power+home+volume down for 10 sec, even though the warning sign show up, and then let it go all of them. Plug the phone to the computer and then press the volume-down to go into download mode. It works for me. Not on the first try though.
Try doing that with batter charger plug in too.
Click to expand...
Click to collapse
Thanks for your help. I figured out whats wrong, its got a faulty power button. I took the phone apart, put it back together, and was able to get it to boot completely. The slightest touch of the power button causes it to reboot though, so I'm going to need to replace it.

bubba9004 said:
Thanks for your help. I figured out whats wrong, its got a faulty power button. I took the phone apart, put it back together, and was able to get it to boot completely. The slightest touch of the power button causes it to reboot though, so I'm going to need to replace it.
Click to expand...
Click to collapse
Glad you found the problem. I was trouble shooting for the software error.
Yes, power bottom could give you a problem too. I use screen off app so I do not have to use power button to turn off the screen.

1 day old & DEAD. Help me revive!

Got my brand new LG V20 yesterday. It died today! Completely unresponsive, I tried all I could find, can anyone help, I’m willing to try it before sending in for warranty!
Device is LG V20 / H990DS made in Korea. It also says SEA on box so I assume that’s the SEA firmware.
I was hoping I could bring it back to life by flashing using this method https://forum.xda-developers.com/v20/how-to/restore-v20-to-100-stock-bricked-devices-t3524903
BUT I get stuck right at the beginning – I can’t get into download mode! I can’t even turn the phone on, can’t get to recovery, nothing....
But, I did manage to get into fastboot once, maybe if I can get there again I can go to download mode from there? And once turned for a brief time on in detailed attempts later...
---------------
How it happened:
I updated the phone to newest software. It updated around 3 times? Not sure of the versions wasn’t paying attention. All was OK. Then I left it overnight to charge. Woke up to 100%. All OK. Then I was connecting my Bluetooth smart band, and was having trouble. So I had to off/on Bluetooth a few times... Finally, my band connected. And then after a couple minutes, phone shuts down. I tried turning it on but only vibrated, nothing happened. I pulled the battery for 15 secs, tried again, I think it boot looped on LG logo. Then I started researching xda and internet and tried a lot of things, can’t remember all but long story short nothing worked really.
I do remember, putting it on charger while off at least 1 time, it started charging (battery at around 85-95% animation charging... Then not sure if it turned itself on or I tried and died.
At one point, when I tried to power it on it said something like “kernel crash” or something with a bunch of numbers, but I think it turned itself off (or I did after a few minutes not sure), don’t remember details.
Then I remember trying powering it on, also trying power + vol+ and power + vol- a few times pulling battery in-between nothing happened.
Then I tried connecting it to PC and got windows “chime” a.k.a. USB connected something a few times. But screen on phone was dead, and it displayed as “Lemobile Android Device” something like that, was not visible in My Computer (only under devices and printers).
And I remember trying to get the PC to recognize the phone, I tried to connect holding no buttons, tried with vol+, tried with vol- and sometimes I got the chime sometimes not.
And one of the final attempts, and probably the most progress I got before writing details below, I somehow got it into fastboot mode. I have no idea how, but it said fastboot on phone screen (with some other details) and it was connected to pc. I tried writing fastboot devices and it showed my phone as connected! So I thought OK, it seems phone is not totally dead. Then I wrote fastboot reboot-bootloader and it said success or whatever on PC, but phone didn’t react... After about 30 seconds or so, phone turned itself off (screen dead and fastboot devices didn’t see it anymore) and after this whatever I tried nothing worked. Since I don’t know how I got in fastboot mode anymore (I think I held some key and connected to pc, but can’t remember) I don’t know what else to try.
---------------
After all of above, I decided I will write down all attempts exactly. So if you can help me, please, write exact steps what I should try, and let’s see what happens. I will edit post and add what I tried from suggestions.
Power Refresh =
1) pull battery out (and keep it out)
2) hold power key 1 min
3) put battery back in
---------------
Attempt 1:
1) Power Refresh
2) hold power key 1 min – nothing
3) plug into charger 1 min – nothing
4) plug into pc 1 min (then disconnect) – nothing
5) hold power & vol+ 10s – nothing
6) hold power & vol- 10s – nothing
7) hold vol+ and plug into pc (30s) – nothing
8) hold vol- and plug into pc (30s) – nothing
---------------
Attempt 2:
1) Power Refresh
2) hold vol+ and plug into pc (30s) – nothing
3) hold vol- and plug into pc (30s) – nothing
4) pull battery 10s and put back in
5) plug into pc 1 min (then disconnect) – nothing
6) pull battery 10s and put back in
7) hold power & vol+ 10s – nothing
---------------
Attempt 3:
1) Power Refresh
2) plug into charger 10 min – nothing happened BUT, it’s warm between camera and power key
3) hold power key 1 min – nothing
4) plug into pc 1 min – nothing
5) hold power & vol+ 10s – nothing
6) hold power & vol- 10s – nothing
---------------
Ready to give up and assume it’s DEAD BUT THEN......
---------------
Attempt 4:
1) Power Refresh
2) Power key & vol+ - maybe a few seconds, phone vibrates, LG LOGO shows and it turns ON!!
3) I’m shocked, have no idea what to do now... Go into settings, check software version... Saw battery was at 85% or so....
4) Phone Reboots itself, LG Logo.... and DEAD. – but warm between camera and power key.
5) plug into pc 10s – nothing
6) pull battery (10s and put back in)
7) Power key & vol- 15s – nothing
---------------
WTF at this point? It’s obviously NOT dead, but not alive either. Zombie mode?
---------------
Attempt 5:
1) Power Refresh
2) Power key & vol- 15s – nothing
3) Pull battery (and put back in)
4) Power key & vol+ 15s – nothing
---------------
Attempt 6:
1) Power Refresh
2) Do nothing 5 min
3) Power key & vol+ 30s – nothing
---------------
Ready to give up again, HELP?
---------------
Attempt 7:
1) Power Refresh
2) Go to sleep, trying more stuff in morning......
To be continued and updated once suggestions come in.....

Got a bad phone. Get it replaced

Will do it on monday, I guess it's a hardware fault then?

Seems like it. usually if it only vibrates when trying to turn on then its in EDL mode(Emergency DownLoad mode) usually because there is a corrupt bootloader. if its 1 day old and that happens then we would assume that theres a hardware fault in reading the EMMC. Unfortunatly we cannot really do anything in EDL mode without the proper tools(like a jtag box) and the proper files which we do not have.

[S7 edge]Cannot go to access download mode

My S7 edge often dies suddenly and everytime I need to restart or wait until it is out of battery to restart it. However today, unlike usual I couldn't restart my phone after waiting it out of battery. I even tried to hold volume down + home + power constantly in order to access to download mode, but nothing happened except a black screen.
I wonder do we have any way to fix this problem? Can a jig usb fix this problem?