Database Develop

Phone not booting

I am having a problem with my phone and I'm sure there is a solution for it but I must not be using proper keywords to pull up posts. So I went through the first time flasher's guide and followed it all perfectly, got hardSPL flashed, resynced my phone then flashed the new ROM and it booted fine the first time and I was making a call then my phone turned off, rebooted once and claimed my battery was low which I know it isn't because it was a fully charged battery when I began all this, then it died again and hasn't booted since. I tried plugging it in to my computer's USB port and the charge light does not turn on. If I hold the softkeys and press the reset button or the power button (regardless of it being unplugged and running on battery) it comes up with the screen asking if I wish to restore factory defaults. When I do this it makes no difference in the device booting. When I press the power button the green light will remain solid for a short amount of time then turn off. I don't want to think this is a bad flash because it did work for a bit of time and I was going around and messing with settings and such, is there another possible reason for this and is there a way I can restore my phone to either stock FW or a different CFW?
The CFW I flashed can be found here
Thanks in Advance!

Just sounds like you have a faulty battery to me. Has it got wet somehow lately or leaked slightly?

It was a faulty battery, it had dents in it and I didn't happen to think that the cell inside the battery got damaged, got a new battery in there and its working great now.

constant reboots in, cwm,cm boot logo and cm11 it's self

I'm getting constant times when my nook HD+ just shuts down, it first happened in cm11 the 9/11 nightly, it would shut off when I went on certain web pages and on YouTube, then it would shut off when I tried to change the wallpaper. It would then shut off at the cm boot logo after about 2 seconds,only being able to boot fully after repeating about 4 times. So I did a factory reset and reinstalled the rom, but then when I tried to install gapps the device would shut off, so I went in did factory reset again and formatted system, installed the ROM and gapps fine this time but the first time it still shut off at the cm boot logo, its now booted back into cm 11 the second time but still getting shut off's when I try to apply wallpaper etc.
I've re installed the stock ROM and I'm still getting random shut downs and its saying my battery is 1% when its fully charged
can anybody help please ?

same here
neontigers said:
I'm getting constant times when my nook HD+ just shuts down, it first happened in cm11 the 9/11 nightly, it would shut off when I went on certain web pages and on YouTube, then it would shut off when I tried to change the wallpaper. It would then shut off at the cm boot logo after about 2 seconds,only being able to boot fully after repeating about 4 times. So I did a factory reset and reinstalled the rom, but then when I tried to install gapps the device would shut off, so I went in did factory reset again and formatted system, installed the ROM and gapps fine this time but the first time it still shut off at the cm boot logo, its now booted back into cm 11 the second time but still getting shut off's when I try to apply wallpaper etc.
I've re installed the stock ROM and I'm still getting random shut downs and its saying my battery is 1% when its fully charged
can anybody help please ?
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Click to collapse
i have been having this issue for like two months now. it all started when my daughter ran the tablet out totaly. took a good three days of tinkering before it would actualy take a charge. now i get constant shut downs, flickering screen. will say im 100 percent charge and when take the cable out it will go down to 1% i dont think the battery is bad because sometimes it will actualy hold the charge.

Could be the power connector or at least somewhere along the power path. My old kindle had what looked like battery issues which was actually the cable itself at the port that was a bit loose and a different cable had fixed it - it even said it was fully charged but drained 4x faster (give or take). After the fix the battery life was normal again.
Its would be incredibly confusing [to me] if draining all life from the battery is the cause of your problems as I do it often with all phones/tablets (and others do it) and its never caused me a problem not even once. I do it on purpose not accidental.
More likely a coincidence and not the actual cause and the issue is that something was damaged or going bad. It doesn't sound like a software problem. And since it appears to be battery related that would likely be the battery or related path such as the power cable, port, wall plug.
Since its made by humans, I'm going to say if it turns green fully charged then its not necessarily anywhere near fully charged especially if the incoming power wasn't the proper amount, it could potentially be thrown off and confused instead of what one would expect happening that of either/or.
Wrong or right there's my best guess. Do with it what you will.
Adding if its still under warranty (I would assume), according to leapinlar, BN will give you a new power cable if that's the problem, or same with the device (as I took advantage of for hardware defect).

sandsofmyst said:
Adding if its still under warranty (I would assume), according to leapinlar, BN will give you a new power cable if that's the problem, or same with the device (as I took advantage of for hardware defect).
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Click to collapse
They will only give you a new cable if it is still in the warranty period AND it still is running stock. You may get by with just taking the cable in, and if they can demonstrate it is defective, get a new one. But if you bring the device in with CM on it the warranty goes bye-bye. So if you take it in, be sure stock is on it.
Sent from my BN NookHD+ using XDA Premium HD app

*gasp* the rest of it. Thanks for the correction there.

GOT IT
So i took it apart thinking i would replace the battery. Didn't end up having to. i disconnected the battery from the main board, then plugged it back in. tablet fired up and showed 100% battery. haven't had a single issue since. :good::good::good:

[Q] Nook HD won't boot

Hi,
I've owned a B&N Nook HD (7 inch) for just over a year, when I first got it I flashed CWM and CM10 onto it and ever since have had absolutely no issues with it, however a couple of weeks back I was having trouble getting it to charge, it would take a few tries of plugging the cable in before it would finally begin (I'm not sure whether this is related at all to the issue) However a couple of days ago I was happily browsing the internet, then it made a strange "Pop" sound and the screen went completely black. Ever since then it won't boot up, it will briefly display the Nook logo but will then make the same pop sound and go to what looks like a black screen, however under low light you can see that the backlight is still faintly on, and to turn it off you have to hold the power button for 7ish seconds. Also on one attempt to boot it made it past the nook logo, and onto the cm loading screen but then had the same issue. I've also tried booting it to recovery but with no success :crying: .
Any help would be greatly appreciated, even if it's just to say that it's a complete right off.
Thanks

Probably you might have damage battery
bobjohnsonandco said:
Hi,
I've owned a B&N Nook HD (7 inch) for just over a year, when I first got it I flashed CWM and CM10 onto it and ever since have had absolutely no issues with it, however a couple of weeks back I was having trouble getting it to charge, it would take a few tries of plugging the cable in before it would finally begin (I'm not sure whether this is related at all to the issue) However a couple of days ago I was happily browsing the internet, then it made a strange "Pop" sound and the screen went completely black. Ever since then it won't boot up, it will briefly display the Nook logo but will then make the same pop sound and go to what looks like a black screen, however under low light you can see that the backlight is still faintly on, and to turn it off you have to hold the power button for 7ish seconds. Also on one attempt to boot it made it past the nook logo, and onto the cm loading screen but then had the same issue. I've also tried booting it to recovery but with no success :crying: .
Any help would be greatly appreciated, even if it's just to say that it's a complete right off.
Thanks
Click to expand...
Click to collapse
Please watch this tutorial how to remove battery. https://www.youtube.com/watch?v=YfYvhtw30mU.
Then charge your battery via external power source i.e.Master charger. If you still can't turn on your device. Then buy new battery. Link of ebay is http://www.ebay.com/bhp/nook-battery
If it is software issue @leapinlar will surely figure it out.

Thank you very much for your quick response, I'll give the link a try!

Battery Charged
keshabbhattarai126 said:
Please watch this tutorial how to remove battery.
Then charge your battery via external power source i.e.Master charger. If you still can't turn on your device. Then buy new battery. Link of ebay is
If it is software issue @leapinlar will surely figure it out.
Click to expand...
Click to collapse
I had a go at removing the battery, but as I don't have a Master charger or anything like that around, just stuck a multimeter onto the connector, and it read about 3.5v so to me that seems pretty charged.
Does this mean it is a damaged battery, as I'm on a bit of a shoestring budget, so want to make sure I'm getting the right thing
Regards
Bobjohnsonandco

bobjohnsonandco said:
I had a go at removing the battery, but as I don't have a Master charger or anything like that around, just stuck a multimeter onto the connector, and it read about 3.5v so to me that seems pretty charged.
Does this mean it is a damaged battery, as I'm on a bit of a shoestring budget, so want to make sure I'm getting the right thing
Regards
Bobjohnsonandco
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Click to collapse
I've install stable cyanodgen 10.2.1 a year ago and have this issue ever since. Not sure if it's common but whenever the nook is drain completely to dead...when you try charging it..the light would be green..then amber. So I don't know whether its charge or not but I guess it is. I would not be able to power it back on...the normal way. It would seems dead. The way for me to get it to power up is to get into cwm recovery by pressing both the power and home button at the same time, then reboot it. It gets annoying because I would have to do that all the time since my 5 year would drain it out lol

[SOLVED] Shutdown during boot (was "Battery indicator issue with CM 12.1")

(Please see post #4 as the issue has evolved)
I recently updated my husband's HD from CM 11 to CM 12.1 (the one build in @amaces obsolete folder). This restored some functionality to a few apps that had "moved on" beyond KitKat and preserved the HMDI functionality. Everything else is essentially the same. Except.
Too often on starting the tablet up in the morning it shows about the same battery level as at shutdown the prior evening (maybe 50-ish) and then in a matter of minutes nosedives to 1%. You can see the behavior on the power usage graphic in Settings and it's pretty shocking. There's a vertical line for when it booted up and then *bam*, it drops to essentially nothing. If the tablet is plugged in for just a moment, the battery level returns to normal and everything is fine. It can be disconnected from the power supply and behaves normally the rest of the day.
So this is annoying (moreso because I need to hear about it every time it happens ). I've read the entire (unofficial) CM 12 thread. This issue comes up once or twice and seems to be "resolved" by "calibrating" the battery either with an app from the PlayStore or without. The app seems to just delete a file that would be overwritten at boot anyway from what else I have read on the subject, but the main idea is to drain the battery to an actual 1%, shut down and charge (the tablet remains "off" although the screen is on) until you've got 100% (which has to be judged by the green LED since the tablet is off).
I tried this (with the app), beginning by wiping cache and dalvik cache. It seemed to work for awhile. Then I foolishly suggested doing a backup. I did this with the emmc TWRP and everything seemed to go well except the battery indicator issue started up again...
So we did the battery thing again.... And it was just fine until this morning (not what you want to hear as you sit down to breakfast).
Clearly one could live with this if you always have the charger close at hand, but it's pretty lame. The tablet behaves beautifully in all other respects. I don't think it's a hardware issue as it started right after flashing the new ROM.
One person in the CM 12 thread actually praised the ROM as eliminating this issue which he had from CM 11!
Is this a flashing glitch which might be fixed by reflashing the ROM? I'm loath to do a clean install and reconstruct everything again after such a short time, but I wonder if a "dirty" install (don't wipe data, right?) would be enough. If I reflash the ROM do I have to reflash GApps also?
Suggestions? I'm really at a loss here.

nmyshkin said:
...
Is this a flashing glitch which might be fixed by reflashing the ROM? I'm loath to do a clean install and reconstruct everything again after such a short time, but I wonder if a "dirty" install (don't wipe data, right?) would be enough.
Click to expand...
Click to collapse
I doubt if a dirty flash would change anything, but there does not appear to be any penalty to try it out as a shot in the dark.
If I reflash the ROM do I have to reflash GApps also?
Click to expand...
Click to collapse
Not if you don't wipe /data -- basically same as in the case of a dirty upgrade.

digixmax said:
I doubt if a dirty flash would change anything, but there does not appear to be any penalty to try it out as a shot in the dark.
Not if you don't wipe /data -- basically same as in the case of a dirty upgrade.
Click to expand...
Click to collapse
I finally got around to this after much complaining about the issue and now I've managed to make it much worse. Before, the tablet would drop from the 50's (or lower) to 1% on boot. Higher percentages of charge were usually safe. Now it goes through the boot process up to the animation and then abruptly shuts down UNLESS the power cable is connected, regardless of the state of battery charge. If the cable is connected boot occurs normally and you can disconnect after boot is complete and everything is "fine".
Except, of course, it's not "fine" at all. Unless you have the charger and cable with you at all times, the tablet has to be left on when you're on the go.
Ugh. Any ideas besides going back to stock and starting over?

nmyshkin said:
I finally got around to this after much complaining about the issue and now I've managed to make it much worse. Before, the tablet would drop from the 50's (or lower) to 1% on boot. Higher percentages of charge were usually safe. Now it goes through the boot process up to the animation and then abruptly shuts down UNLESS the power cable is connected, regardless of the state of battery charge. If the cable is connected boot occurs normally and you can disconnect after boot is complete and everything is "fine".
Except, of course, it's not "fine" at all. Unless you have the charger and cable with you at all times, the tablet has to be left on when you're on the go.
Ugh. Any ideas besides going back to stock and starting over?
Click to expand...
Click to collapse
I came across a post that suggested returning all the way to stock and doing a factory reset, then rebuilding the system.
Once at stock I had no trouble completing a boot without being plugged in. So that is not a hardware issue. I didn't stay on stock long enough to see if the battery indicator behaved, but I'm guessing it did. I prepared a completely new SD card with newly downloaded files and proceeded to do the needed flashing for CM 12.1 w/GApps, using CWM 6.045. It all seemed to go well--even no screen flashing--until I unplugged the tablet so I could easily remove the SD card and reboot. As soon as I removed the power cord the periodic screen flashing that seems to be common during CWM use started up.
I rebooted and got only so far with the CM logo before the tablet shut down.
I don't get it. It worked fine before. What about this process could be causing this odd behavior?
Edit: in desperation I tried flashing The ROM again right over the prior installation. This time I booted into the emmc CWM (6.0.4.6) and waited for the tablet to calm down. Then I unplugged it and flashed the ROM from the ext.SD card. No error messages. I held my breath and rebooted. I got to several iterations of the cyan android face and then it shut down again.
Next I flashed TWRP 2.8.7.4 to emmc and tried flashing the ROM from the ext.SD card that way. Same result.
The battery charge shows 80% so it's not like the tablet is running on fumes and it's hard to believe the problem is the battery or the indicator since none of this happens on the stock ROM.
I just don't get it. We don't want to go back to stock but I don't understand any of what is going on. Initially CM 12.1 was working beautifully. Then the battery indicator issue started. I addressed that as best I could and when it seemed like we had that on the run I did a backup. That resulted in this shutdown issue. You can use the tablet just fine if you never turn it off and keep either the charger or a portable power pack handy (don't forget the cable!).
I really need some help troubleshooting. I'm willing to try just about anything.
Edit: indeed, the last resort was to buy another HD... But it turns out the booting issue was caused by an SD card that somehow was not properly prepared as 0x0C FAT32 LBA but was instead something else which I don't remember now (something with a "b"). Anyway, once a new card was carefully prepared, the tablet booted fine without being plugged in. Whether this also solves the battery indicator issue remains to be seen.

SM-T800 boot-loops and dies the moment you let go of the power button?

I've got an SM-T800 behaving very oddly, hope someone knows what's up!
If you attempt to boot it, it will flash up the Samsung logo, then die, and repeat in an endless boot-loop.
If you hold the power button down, oddly, it changes; instead it will proceed to the animated SAMSUNG logo which will then continue to pulse in and out indefinitely until you get bored and release the power button... at which point it instantly dies and then begins boot-looping again.
If you try to enter recovery by holding power + volume up + home, it will do so, but the moment you let go of the power button it dies.
Thinking it was down to the battery, I tried replacing it, and if anything the behaviour has been worse since!! It was at least possible previously to get the thing to sit in recovery without rebooting, but now it never does if you let go of the power button.
I've also tried reflashing the default firmware via ODIN; the one thing that always works is the download mode (power + volume down + home); I can reliably boot it into download mode and flash via ODIN, but then on reboot, it gets partway through the installation process (like a few seconds in) and then boot loops back to the samsung logo again.
Now it's difficult to get it to even charge; it will keep looping the charging symbol (battery with a lighting bolt on it) on and off the screen unless you fettle the buttons until it just sits at a black screen. I can see from the USB charger it is still drawing charge current.
Any ideas??!

It probably dead. Speaking as someone who had this issue for countless devices, I say that your battery probably can't hold enough charge anymore to completely power the device through.
It doesn't matter even if you charge it to 100%. The battery had degraded to a point where a minimal charge required to let the device pass the crazy power surge required during Android boot is just not meeting the minimum.
Hence it fizzles out. And rebooted.
I kept replacing my Galaxy S5 battery until few months ago, no battery I bought is enough to fully power it on anymore.

Thanks for the response; alas, I already tried replacing the battery; if anything it was worse! I suppose it is possible that the replacement battery was also a dud, though? Unfortunately it may be difficult to do a load test (a lot of batteries might not even provide power without specific conditions being met), perhaps I can probe the pins while it tries to boot and see if the voltage sags or something.

I have the same problem and I found this in Yoube; search for "Samsung galaxy tab s restarting issue" video from "Electronics repair school"
It shows bad contact on battery connector soldered side...

I have the same issue, I can hold down the power button and it will boot up completely. As soon as I let go, it reboots over and over again. So far I've replaced the:
USB Charger Port Connector Module Flex Cable
LCD Connector Flex Ribbon Cable
and the Battery
No change in boot up - The only option left , I think, would be to replace the main board. Any thoughts?

i got that issue too,
i did kind of a battery recalibration
meaning: i fully discharged my sm-t800 (took me some time doing reboots until the tab was totally dead)
then charged it to 100% without booting it
unplug it and reboot.
and well, now it works again
the clue here is:
the system stored wrong battery data over the time, so it randomly thinks the battery is at 0% and does an auto-shutdown. To repair this, you have to reset the system with recalibrating the battery, so the system deletes all old data and starts logging new data.
in my case this procedure worked out great
hope you guys will have the same success as i did

Hello everybody!
I thought I would let you know how I solved this issue WITHOUT having to do a full factory reset...
Or so I thought.
Turns out that it started shutting down and bootlooping after a while again.
Even after I ordered a replacement battery and charged that up. At first it looked like it would work and then it started shutting down randomly and bootlooping.
Probably will have to throw the thing out since it doesn't want to work. Makes no sense how its so uncooperative even after putting in a new good battery in the tablet but there's not nuch more that can be done.
If I just start it *sometimes* it will boot up and get to the android OS. Then work for a while before shutting down.
Sometimes it just bootloops at the Samsung Galaxy S logo over and over.
Holding the power button it does boot but if you release the button it MOST often just shuts off and bootloops.
Anyone know if there's anything to be done to fix this?
//Kindest regards XDAFan2015

xdafan2015 said:
Hello everybody!
I thought I would let you know how I solved this issue WITHOUT having to do a full factory reset...
Or so I thought.
Turns out that it started shutting down and bootlooping after a while again.
Even after I ordered a replacement battery and charged that up. At first it looked like it would work and then it started shutting down randomly and bootlooping.
Probably will have to throw the thing out since it doesn't want to work. Makes no sense how its so uncooperative even after putting in a new good battery in the tablet but there's not nuch more that can be done.
If I just start it *sometimes* it will boot up and get to the android OS. Then work for a while before shutting down.
Sometimes it just bootloops at the Samsung Galaxy S logo over and over.
Holding the power button it does boot but if you release the button it MOST often just shuts off and bootloops.
Anyone know if there's anything to be done to fix this?
//Kindest regards XDAFan2015
Click to expand...
Click to collapse
I have had the same experience with my T800. What I have been doing is to tape the power button down using scotch tape. The tablet can be waken up by pressing the home button. In my case, I need to remove the button to recharge the tablet.. So far so good.