[Q] my phone doesn't open - Galaxy S 4 Q&A, Help & Troubleshooting

hey guys, while i was chatting in whatsapp my phone suddenly closed and started saying samsung galaxy si9500 then it ends then it starts again i can't open my phone now i tried to open recovery mode but i couldn't, i tried open download mode it says warning- a custom os can cause critical problems in phone and installed app... then i pushed volume up button but it didn't do anything just started opening and closeing again. what should i do guys my phone has xaphoid rom 4.2.2 how can i reset my phone please help me btw sorry about my bad english.

premiumsound said:
hey guys, while i was chatting in whatsapp my phone suddenly closed and started saying samsung galaxy si9500 then it ends then it starts again i can't open my phone now i tried to open recovery mode but i couldn't, i tried open download mode it says warning- a custom os can cause critical problems in phone and installed app... then i pushed volume up button but it didn't do anything just started opening and closeing again. what should i do guys my phone has xaphoid rom 4.2.2 how can i reset my phone please help me btw sorry about my bad english.
Click to expand...
Click to collapse
Hi mate ,
I am not sure what you mean ... but for what i could understand maybe is the power button that is stuck , move it a little , see if is working correctly , a stuck power button will do something like what you are describing

premiumsound said:
hey guys, while i was chatting in whatsapp my phone suddenly closed and started saying samsung galaxy si9500 then it ends then it starts again i can't open my phone now i tried to open recovery mode but i couldn't, i tried open download mode it says warning- a custom os can cause critical problems in phone and installed app... then i pushed volume up button but it didn't do anything just started opening and closeing again. what should i do guys my phone has xaphoid rom 4.2.2 how can i reset my phone please help me btw sorry about my bad english.
Click to expand...
Click to collapse
Stuck power button might be the culprit.
Try pressing it,moving it to get it free.
Its been a common problem now. The stuck power button.
Sent from my GT-I9500 using XDA Free mobile app

Related

GT-I9505 HELP! Samsung Galaxy S4 Vibrates but doesnt turn on!

COULD SOME ONE PLEASE HELP ME!!!
My SGS4 ealier started to lose signal so i cannot send messages
So i restarted it then now it wont boot
trevourlance27 said:
COULD SOME ONE PLEASE HELP ME!!!
My SGS4 ealier started to lose signal so i cannot send messages
So i restarted it then now it wont boot
Click to expand...
Click to collapse
What did u do last did u flash and rom or any recovery root etc ?
I did not flash anything. ....
im using stock firmware from samsung i9505xxuamdm. . . even recovery is stock android recovery. . i dont even have rpot permissions
i managed to turn on my phone but i see the problem when i rurn it off or when i restart. . .
now its still not booting. . .
its like when i turn it on. . . the phone responds via vibrating but doesnt boot even the i9505 logo doesnt show up (the white samsung galaxy s4 logo before the bootanimation)
trevourlance27 said:
I did not flash anything. ....
im using stock firmware from samsung i9505xxuamdm. . . even recovery is stock android recovery
i managed to turn on my phone but i see the problem when i rurn it off or when i restart. . .
now its still not booting. . .
Click to expand...
Click to collapse
Any recent application installs which might have caused this?
Sent from my GT-I9505 using xda app-developers app
if i remember correctly the last thing i installed is quadrant benchmark
is it possible that something on the root/data/app got missing or uninstalled?
this is the first time i encountered this problem. , havent seen it before in devices that ive handled
It sounds a little like the cache is corrupted (can happen if it doesnt shut down cleanly).
I had similar behaviour on my galaxy note.
The first time I did a factory reset and that fixed it (remember this wipes all data).
The second time I tried formatting the cache partition first and that fixed it.
When I did those I was using CWM recovery. I cant recall the stock recovery options.
If all is the same between phone versions, to enter recovery you hold down home-power-volume_up til it boots.
Sent from my GT-I9100 using xda app-developers app
from other posts from orher devices i have read they say its cache but the problem is when i turn it on it doesnt even boot the iniitial logo (samsung galaxy s4 gt-i9505)
it doesnt show up anything. . . screen doesnt lit up so also a problem how do i go now to recovery if the screen doesnt even turn on (the phone vibrates as a respond but the LED and the Screen doesnt lit up)
i know how to enter recovery mode. . . thats the only problem (softbricked)? this phone was bought on the official day of release
I'm having the same problem... Did you find a solution?
Anyone Solve this?
Getting quite anxious about not being power it on
Alex
Was anyone able to solve this? I'm experiencing the same problem. I can switch it on after removing the battery for a long time, but I can't seem to be able to get to recovery, or reboot proprely. Please help... thanks!
Do we have a fix?
Did anyone fix this? Same problem here
jamhot said:
Did anyone fix this? Same problem here
Click to expand...
Click to collapse
Can you get to download mode?
nop
daraj said:
Can you get to download mode?
Click to expand...
Click to collapse
I'm having the same problem here, Cant go to download or recovery mode just vibrates when press power button but no imagem at all...
but the led turns RED when I plug the charger and now its green because its full charged I guess but still no reboot
Gh0s7_Hun73r said:
I'm having the same problem here, Cant go to download or recovery mode just vibrates when press power button but no imagem at all...
but the led turns RED when I plug the charger and now its green because its full charged I guess but still no reboot
Click to expand...
Click to collapse
having the same problem too
1. you still CAN go to the download mode even if screen is off (I flashed full stock but this did not resolve a problem)
2. I was able to turn on my phone after many attempts: (press power, after vibration release) - I did it about 30-50(maybe more) times and my phone boots up. But after rebooting it again doesnt turn on (again many attempts helps me).
3. I have observed - in my phone vibration turns on after 6s after power button is pressed, in a correctly working one - after 4s.
(sorry for my english)
Was anyone able to resolve this?
same problem here too !! but seem to have found a solution
My galaxy s4 was acting all weird one day, randomly it switched off and wont turn on but keeps on vibrating it was only 3months old I thought it had some serious hardware issues because I tried all the means to resetthe phone but nothing gave me a solution even tried another battery no effect it wont turn on even if it did turn on it would randomly shut itself up within notmorethan 15min I stay in india where i9505 is not sold so Samsung officials would not take my phone for service as they feel its different from i9500 in all means I got fed up and brought myself a new phone a 5s .
A few days before I badly wanted my galaxy so sat whole day searching the internet for fixes couldnt find one . I got angry and smashed the phone hard on the table .to my surprise it gurned on (was connected to the charger ) turns out some phones have a problem with there power button and mine was one of them
I didnt get my button fixed yet but after turning on not using the power button helps . Have been working for 4 days in a row now no problem what so ever . But if I lock my phone using the power button then it tends to get the same problem again ! So guys get your power button checked
Try to fix the button with WD40, worked for me.
trevourlance27 said:
if i remember correctly the last thing i installed is quadrant benchmark
is it possible that something on the root/data/app got missing or uninstalled?
this is the first time i encountered this problem. , havent seen it before in devices that ive handled
Click to expand...
Click to collapse
this is a hard bricked .its mean JTAG issue.contact with a repairing shop keeper...i have also same problem and solved in JTAG

[Q] LG Optimus L3 E405 Recovery Dead?

Hello,
This morning I tried to root my phone so that I can force everything to be moved to a sd card since the storage of the system is low not enough to install apps and to install A mod that is more updated then the current GingerBread OS.
I managed to soft brick the device the rom clearly said e405 obviously the developer has a few bugs anyway I manage to recover from my soft brick by A software 'KDZ' Only issue I have now is when I press volume up on boot I get A notice icon trying to say something (image of the icon is attached below) and when I use ROM Manager to reboot to recovery it will attempt to go there, Instead of going to recovery it goes to A loading page then this erases all my data/apps except SuperUser/Root.
Tried everything and it still does it?
When I use the LG Emergency Software it just goes to a page saying not responding??
Any help and ideas would be grateful so I can fix this issue and move on also im mostly A samsung user and im fairly new to lg.
See thee error message below
Once i get the idea of what the icon is actually trying to say I should be in the right direction.
Thanks,
Spudster
umm
Anyone??
Spudster1 said:
Anyone??
Click to expand...
Click to collapse
Perhaps you can go to ROM Manager, uninstall Recovery, then re-install it?
I don't really know. I'm sorta new to this stuff.
hard reset
Spudster1 said:
Hello,
This morning I tried to root my phone so that I can force everything to be moved to a sd card since the storage of the system is low not enough to install apps and to install A mod that is more updated then the current GingerBread OS.
I managed to soft brick the device the rom clearly said e405 obviously the developer has a few bugs anyway I manage to recover from my soft brick by A software 'KDZ' Only issue I have now is when I press volume up on boot I get A notice icon trying to say something (image of the icon is attached below) and when I use ROM Manager to reboot to recovery it will attempt to go there, Instead of going to recovery it goes to A loading page then this erases all my data/apps except SuperUser/Root.
Tried everything and it still does it?
When I use the LG Emergency Software it just goes to a page saying not responding??
Any help and ideas would be grateful so I can fix this issue and move on also im mostly A samsung user and im fairly new to lg.
See thee error message below
Once i get the idea of what the icon is actually trying to say I should be in the right direction.
Thanks,
Spudster
Click to expand...
Click to collapse
I saw that icon after flashing back to stock rom with KDZ and a hard reset worked for me. Pull the battery, make sure you not connected to USB or charger, then press and hold home key and down volume while you press power on. Release power when you see LG logo, hold the down and home for a while until you see android unpacking a box. It takes about a minute to see this, so you gotta wait for it. The phone reboots or shut downs, don't rememberwhich
reply
kurtstraker said:
I saw that icon after flashing back to stock rom with KDZ and a hard reset worked for me. Pull the battery, make sure you not connected to USB or charger, then press and hold home key and down volume while you press power on. Release power when you see LG logo, hold the down and home for a while until you see android unpacking a box. It takes about a minute to see this, so you gotta wait for it. The phone reboots or shut downs, don't rememberwhich
Click to expand...
Click to collapse
Ok I will try that and let you know if it works in a few hours I gave the phone to my brother for free since I bought A samsung (used to samsungs and love then
Anyway should also mention that when I try to reboot into recovery with rom manager it reboots goes to the loading box thing then it wipes my data Like i said I tried that method in a few hours and get back to you here.
nope
didn't work ;.(
Man go to the screen u have posted the images above , then use KDZ to flash back Man!
This is "DIAG MODE" so select it in KDZ program
So select KDZ file ( download if u have tried urs so far)
No error .. when u click to start upgrade ur phone will apper in emergency mode. Then the KDZ will flash flawslessly
Sent From ... Lg e400 <-- {[Brasilian Here]}
Still didnt work it flash though but still didnt fix the recovery..
These lg are actually useless a simple firmware flash should do the job.
LG staff are also rude to be honest rang up and because I tried to root and I was doing the right thing going back to stock they denied support and hang up without me giving A reply. Glad ive switched back to samsung s4 and Apple IPhone 5C.
Thanks for attempting to help :.)

[Q] Galaxy S4 i9500 stuck on home screen for no reason

Hi guys,
I did a research regarding my problem, found a couple of threads but none of them helped and I noticed my situation is a bit different from most users having this problem.
I live in Brazil, went on a trip to USA for 15 days, kept my SIM card and SD into the phone, just used it to access WiFi, watch videos, make a couple of Viber calls, send messages via WhatsApp, etc. Everything was fine, no problem at all.
Today, when I landed in Brazil, I turned on the phone, entered my pattern and since then my phone just displays that initial screen "Samsung Galaxy S4" and keeps rebooting like crazy. In these last 15 days, I didn't make a single change on the phone. Absolutely nothing. It just decided not to work anymore
My phone is not rooted, runs the latest updates.
I tried initializing in safe mode (power+home+volume up), it shows the android green robot at a glance and then reboots again. I can't even read what is written on the screen, so fast the reboot takes place. I also tried pressing the menu button repeatedly, but no luck as well. Tried removing the battery, turning on without SIM & SD, nothing. When I connect it to a power source, the red led doesn't even light. My computer doesn't recognize it either.
Any suggestions on what to do? Returning it to the shop is not an option as well, cause I bought it out of Brazil...
Thanks a lot, colleagues!
VIDEO: http://www.youtube.com/watch?v=_0A_D5Od9LM
maykonsantini said:
Hi guys,
I did a research regarding my problem, found a couple of threads but none of them helped and I noticed my situation is a bit different from most users having this problem.
I live in Brazil, went on a trip to USA for 15 days, kept my SIM card and SD into the phone, just used it to access WiFi, watch videos, make a couple of Viber calls, send messages via WhatsApp, etc. Everything was fine, no problem at all.
Today, when I landed in Brazil, I turned on the phone, entered my pattern and since then my phone just displays that initial screen "Samsung Galaxy S4" and keeps rebooting like crazy. In these last 15 days, I didn't make a single change on the phone. Absolutely nothing. It just decided not to work anymore
My phone is not rooted, runs the latest updates.
I tried initializing in safe mode (power+home+volume up), it shows the android green robot at a glance and then reboots again. I can't even read what is written on the screen, so fast the reboot takes place. I also tried pressing the menu button repeatedly, but no luck as well. Tried removing the battery, turning on without SIM & SD, nothing. When I connect it to a power source, the red led doesn't even light. My computer doesn't recognize it either.
Any suggestions on what to do? Returning it to the shop is not an option as well, cause I bought it out of Brazil...
Thanks a lot, colleagues!
Click to expand...
Click to collapse
You could try this take the battery out for at least 12 hours , I read somewhere that can work for your kind of problem
I had this with Note 2.
No other option but to factory reset and flash official samsung firmware from sammobile.com
After that we were back to normal. Try that.
sounds not that bad..
try booting on download mode then flash some official firmware from sammobile.com
NOTE: don't flash XXUMH8 or any MH firmware for it contains new bootloaders with the samsung KNOX crap.
I really wish I could solve that without having to install everything again... but anyway
I'm sorry for this newbie question, but how can I flash a new firmware if my computer doesn't recognize my phone?
And what software do I need in order to do that?
Thanks a lot!
Just one more question...
if I really have to install a firmware, isn't it better to flash one from another country?
It seems like Brazil is always one of the latest to get the updates
Which country would you recommend?
Thanks a lot again, colleagues.
maykonsantini said:
I really wish I could solve that without having to install everything again... but anyway
I'm sorry for this newbie question, but how can I flash a new firmware if my computer doesn't recognize my phone?
And what software do I need in order to do that?
Thanks a lot!
Click to expand...
Click to collapse
This is how you flash official firmware on your phone.
http://forum.xda-developers.com/showthread.php?t=2265477
This topic also has some troubleshooting guide.
maykonsantini said:
Just one more question...
if I really have to install a firmware, isn't it better to flash one from another country?
It seems like Brazil is always one of the latest to get the updates
Which country would you recommend?
Thanks a lot again, colleagues.
Click to expand...
Click to collapse
Well... just tried to access download mode here, but no sucess.
Phone reboots after the warning. =( I can't get the message "Downloading… Do not turn off target" after I press volume up, it reboots.
Any suggestions?
maykonsantini said:
Well... just tried to access download mode here, but no sucess.
Phone reboots after the warning. =( I can't get the message "Downloading… Do not turn off target" after I press volume up, it reboots.
Any suggestions?
Click to expand...
Click to collapse
Well if u are able to boot the device u should surely be able to go to download mode
Can u try multiple times if possible
Power off device unplug it
Press -> volume down+Home+power button all together till it shoes option there volume up and u should be at download mode and then try flashing A firmware using Odin and once its done Reset the device from the phone back up and reset option all should be fine :fingers-crossed:
try avoiding any backup restore as there myte be some issue with some bad file also
123hiten said:
Well if u are able to boot the device u should surely be able to go to download mode
Can u try multiple times if possible
Power off device unplug it
Press -> volume down+Home+power button all together till it shoes option there volume up and u should be at download mode and then try flashing A firmware using Odin and once its done Reset the device from the phone back up and reset option all should be fine :fingers-crossed:
try avoiding any backup restore as there myte be some issue with some bad file also
Click to expand...
Click to collapse
Hi,
download mode doesn't work indeed. It reboots before I'm able to press volume up...
I have tried several times.
Any ideas?
maykonsantini said:
Hi,
download mode doesn't work indeed. It reboots before I'm able to press volume up...
I have tried several times.
Any ideas?
Click to expand...
Click to collapse
Sorry this is little weird but can u you try and see of you have original Samsung s4 as there are some clones available
Just search on this forum there are some example how to find out or Google it
Sent from my SM-N900 using XDA Premium 4 mobile app
123hiten said:
Sorry this is little weird but can u you try and see of you have original Samsung s4 as there are some clones available
Just search on this forum there are some example how to find out or Google it
Sent from my SM-N900 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'm totally sure it is genuine.
I mean, I can go to download mode.
When I press power+home+volume down, it works.
But when I click volume up in order to continue to download mode, the phone reboots.
It can't stay stable for more than 3 seconds, let's say.
maykonsantini said:
I'm totally sure it is genuine.
I mean, I can go to download mode.
When I press power+home+volume down, it works.
But when I click volume up in order to continue to download mode, the phone reboots.
It can't stay stable for more than 3 seconds, let's say.
Click to expand...
Click to collapse
I m too little confuse actually may be try doing reset hard reset and also factory reset going to stock recovery see what option can work else service centre myte be the option
Sent from my SM-N900 using XDA Premium 4 mobile app
123hiten said:
I m too little confuse actually may be try doing reset hard reset and also factory reset going to stock recovery see what option can work else service centre myte be the option
Sent from my SM-N900 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Ok, but in order to perform a hard reset, I need to press power+home+volume up at the same time, right?
That doesn't work either.
When the small green android robot is shown, the phone immediately reboots. I can't even read if there's something written, so fast it reboots.
Are there any options left or just sending to Samsung?
maykonsantini said:
Ok, but in order to perform a hard reset, I need to press power+home+volume up at the same time, right?
That doesn't work either.
When the small green android robot is shown, the phone immediately reboots. I can't even read if there's something written, so fast it reboots.
Are there any options left or just sending to Samsung?
Click to expand...
Click to collapse
B4 giving the phone to service just go to link stock firmware in my signature and ask there his user I'd is samersh72 he myte be able to help you
Sent from my SM-N900 using XDA Premium 4 mobile app
123hiten said:
B4 giving the phone to service just go to link stock firmware in my signature and ask there his user I'd is samersh72 he myte be able to help you
Sent from my SM-N900 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Ok! Thanks a lot for your help
Try removing your sd card before going to download mode, maybe it's trying to finish a failed update. Try using someone else's empty sd card
Sent from my GT-N7100 using xda app-developers app
Rebooting issues are battery related sometimes. Try another S4 battery and see if it helps
Sent from my GT-I9505 using XDA Premium HD app
Thanks MaryAnna and Obagleyfreer. I've already tried what you just suggested.
No luck
I tried to give it to Samsung, and look what I've got:
They told me to look for support in the country I bought the phone.
This is ridiculous. It's a shame.
That's when I regret changing my iPhone for a Galaxy.

[Q] Why is my LG Optimus L5 stuck at the LG Logo while switching on??

I Have a rooted LG L5 Smartphone.i have then official jellybean on my phone.The service centre guys upgraded it a few months back.i have rooted my phone in order to get rid of some annoying system apps.i havent done anything else like installing custom roms,kernals..etc(truth is i dont know how!)..am just a standard user.
Today afternoon i installed an app called GLTooLs -which enhances the gaming experience in the phone, from datahostfile(installed for the 1st tym) .
I installed the app and opened it and checked all the boxes in the opening page of the app inorder to configure the app(install).i clicked install and then suddenly my phone got frozen.I Long pressed the power button inorder to restart my phone.Phone got restarted,but it got stuck on the boot-time LG Logo which appeared first.The backlight wont turn off.i had to remove the battery to switch the phone off.i tried to restart my phone many times,but still my phone was stuck at the lg logo.everytime i had to remove the battery and reinsert it inorder to switch off the phone.
i tried to HARD RESET my phone by pressing power+volume down+home button.The android logo appeared in the loading state but after about 3 seconds the LG Logo appeared in the stuck position.Somebody please help me in fixing my phone??..am totally screwed.:crying:
[NOTE- i installed the busybox app in the morning and didnt restarted my phone after that.i deleted some unwanted files like whatsapp voice notes n ol from the internal memory in noon.i dont think they are the problem causers.just mentioned it]
pauls0n said:
I Have a rooted LG L5 Smartphone.i have then official jellybean on my phone.The service centre guys upgraded it a few months back.i have rooted my phone in order to get rid of some annoying system apps.i havent done anything else like installing custom roms,kernals..etc(truth is i dont know how!)..am just a standard user.
Today afternoon i installed an app called GLTooLs -which enhances the gaming experience in the phone, from datahostfile(installed for the 1st tym) .
I installed the app and opened it and checked all the boxes in the opening page of the app inorder to configure the app(install).i clicked install and then suddenly my phone got frozen.I Long pressed the power button inorder to restart my phone.Phone got restarted,but it got stuck on the boot-time LG Logo which appeared first.The backlight wont turn off.i had to remove the battery to switch the phone off.i tried to restart my phone many times,but still my phone was stuck at the lg logo.everytime i had to remove the battery and reinsert it inorder to switch off the phone.
i tried to HARD RESET my phone by pressing power+volume down+home button.The android logo appeared in the loading state but after about 3 seconds the LG Logo appeared in the stuck position.Somebody please help me in fixing my phone??..am totally screwed.:crying:
[NOTE- i installed the busybox app in the morning and didnt restarted my phone after that.i deleted some unwanted files like whatsapp voice notes n ol from the internal memory in noon.i dont think they are the problem causers.just mentioned it]
Click to expand...
Click to collapse
Can you get in recovery?
pauls0n said:
I Have a rooted LG L5 Smartphone.i have then official jellybean on my phone.The service centre guys upgraded it a few months back.i have rooted my phone in order to get rid of some annoying system apps.i havent done anything else like installing custom roms,kernals..etc(truth is i dont know how!)..am just a standard user.
Today afternoon i installed an app called GLTooLs -which enhances the gaming experience in the phone, from datahostfile(installed for the 1st tym) .
I installed the app and opened it and checked all the boxes in the opening page of the app inorder to configure the app(install).i clicked install and then suddenly my phone got frozen.I Long pressed the power button inorder to restart my phone.Phone got restarted,but it got stuck on the boot-time LG Logo which appeared first.The backlight wont turn off.i had to remove the battery to switch the phone off.i tried to restart my phone many times,but still my phone was stuck at the lg logo.everytime i had to remove the battery and reinsert it inorder to switch off the phone.
i tried to HARD RESET my phone by pressing power+volume down+home button.The android logo appeared in the loading state but after about 3 seconds the LG Logo appeared in the stuck position.Somebody please help me in fixing my phone??..am totally screwed.:crying:
[NOTE- i installed the busybox app in the morning and didnt restarted my phone after that.i deleted some unwanted files like whatsapp voice notes n ol from the internal memory in noon.i dont think they are the problem causers.just mentioned it]
Click to expand...
Click to collapse
its might be because of the rom you use. I had the same problem before. Flash another rom via cwm. it should work
Shao Merng said:
its might be because of the rom you use. I had the same problem before. Flash another rom via cwm. it should work
Click to expand...
Click to collapse
i managed to get in the emergency download mode and flashed the stock firmware...now my phone is alright...thanx anyway:laugh:
I am also having the same problem, please help me to start-up my phone
yesterday I installed font installer in my phone and downloaded a font and after that i rebooted the phone but the phone is not starting.
piyushsoni24 said:
yesterday I installed font installer in my phone and downloaded a font and after that i rebooted the phone but the phone is not starting.
Click to expand...
Click to collapse
you flashed it over stock lg frameware i sopoas.
First thing you need to try is remove your battery, hold volume down and menu button and connect to your charger without battery. Wait for 10 seconds, let go of vol down keep holding menu, wait a few seconds then let go of menu, if your phone dose not reset then you need to use kdz on your pc to flash syock frameware agen.
Sent from my LG-P705 using XDA Free mobile app
still same problem
I tried what you said but its no working still. And please note that my phone's model no. is LG E-612(F).
piyushsoni24 said:
I tried what you said but its no working still. And please note that my phone's model no. is LG E-612(F).
Click to expand...
Click to collapse
its still the same recovery, it ahuld work. But if it wont im afraid youll just have to go in to [email protected] and use kdz to flash stock frameware over your pc.
Sent from my LG-P705 using XDA Free mobile app

my A3000-h is auto reboot when am using it >

i have that new rom after it every thing goes wrong and i donot have backup }} need help with that auto reboot
karim600 said:
i have that new rom after it every thing goes wrong and i donot have backup }} need help with that auto reboot
Click to expand...
Click to collapse
can you explain your problem...what is rom you are using??
having same problem
all the sudden while the tablet is working it reboots by itself
i decided to upgrade the firmware to a3000_a422_013_026_140926_ww_call_fuse after seeing it on my friend's tablet which he got it from the lenovo
the bad news this version is not available on the internet,so i had to go for an older version just to make sure that the tablet is not getting hacked
i got the flash tool ,new cable and connected the tablet while holding the volume down until i heard a device detected sound from my windows 7 then at this moment i released the volume down button.......the tablet was identified in device manager
something is wrong the tablet keeps connecting and disconnecting for no reason even on a different pc
i decided to upgrade and give it a try
it accepted the firmware without even hitting the rest button
i started the tablet from the power button then it started by showing the boot animation then bloop it turned off by itself
i went for this step 4 times : http://forum.xda-developers.com/lenovo-a3000/general/bricked-a3000-f-t2851065
it booted then turned off
i got nervous and tried again and hit the firmware/Upgrade button instead of the download button and strangely it accepted the firmware !!
tried to boot .......nothing!!!
now i am stuck !!
Help Please

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