Develop Bugs

[Q] Nexus 7 32GB LTE wont turn on or charge

Hello I need your help. I didn't make any changes like root, ROM flash, unlocking bootloader and so. In the morning I had about 8 % battery so I plugged tablet into charger (it was on and wifi was also on). When I came home afte 4-5 hours I press power button and lock screen (i didnt unlock it) showed up but I noticed that battery icon showed only 2/3 and there was not charging flash indication, I was confused so I unplug it and lock the screen. Then I press power button again to show unlock screen but nothing happened. After that I tried to plug it back to charger (nothing happened) , try to hold power button for more then 2 minutes, also power + vol UP or vol DOWN (to access bootloader) or both but nothing appeared, I try to connect to PC nothing only when I press power + both volume buttons and plug it into PC then PC shows missing driver QHSUSB_DLOAD but nothing appers on screen. I read that this message indicates brick. How can I brick nexus by nothing doing? I also try google video ,,Nexus 7 won't charge or turn on,, (i cant post link) but only more then 2 hours connection in AC. I'll try leave it over night but I dont think so that it will help.

kinkopop said:
Hello I need your help. I didn't make any changes like root, ROM flash, unlocking bootloader and so. In the morning I had about 8 % battery so I plugged tablet into charger (it was on and wifi was also on). When I came home afte 4-5 hours I press power button and lock screen (i didnt unlock it) showed up but I noticed that battery icon showed only 2/3 and there was not charging flash indication, I was confused so I unplug it and lock the screen. Then I press power button again to show unlock screen but nothing happened. After that I tried to plug it back to charger (nothing happened) , try to hold power button for more then 2 minutes, also power + vol UP or vol DOWN (to access bootloader) or both but nothing appeared, I try to connect to PC nothing only when I press power + both volume buttons and plug it into PC then PC shows missing driver QHSUSB_DLOAD but nothing appers on screen. I read that this message indicates brick. How can I brick nexus by nothing doing? I also try google video ,,Nexus 7 won't charge or turn on,, (i cant post link) but only more then 2 hours connection in AC. I'll try leave it over night but I dont think so that it will help.
Click to expand...
Click to collapse
Use the warranty.

jak3z said:
Use the warranty.
Click to expand...
Click to collapse
I hoped that there is another option , but on the other hand I thanks god I didnt break warranty.
If i'll come up to something , i'll let know.

[Q] Tab 3 7.0 SM-T210 reboot loop and no recovery

Hey guys, have a friends Galaxy tab 3 (7 inch, SM-T210) which simply won't power on.
Firstly, the device came to me because it was completely dead. He is using an Apple charger (5v 1A) which I believe isn't the right output.
After leaving it plugged into the Apple wall charger for more than a full day, it will power on the display and go into a boot loop (displays Samsung logo for about 10secs then reboots).
It never gets to a point where it shows the battery charging icon.
If I do anything to it (hold power button, power+home+volume up, power+home+volume down) while it is in this reboot loop, it simply dies again and needs the full (more than) a day charge again before powering on the display.
It won't go into recovery or download mode.
The longest I have left it charging thus far is about 2.5 days and still the same problems.
I have tried disconnecting the battery connector multiple times also (left disconnected for up to 5 minutes) - this just causes me to have to start the whole charging process again.
Any ideas? I'm currently leaving it plugged into my PC (rear powered USB port) in the hope that it will charge properly - or at least detect a connection to the PC when it enters the bootloop (maybe try ADB).

@fubofo
I know it is difficult.
A) Regards the Power Adapter.
Listen PC USB port should not be used as a charging station. You always run the chance to burn your PC!
In the other hand PC USB is designed to produce 5V but only 0.5 A.
We should always used the Power adapter that came as original accessory. I own a TAB3 10 wifi. Due to our 10" big screen our OEM adapter is 5V 2A. But in your case 5V 1A is fine. It just charges slower.
B) The most used solution is get in to Download Mode and Install Original Stock software. The other possible solution is to get into Recovery Mode and do a Wipe of Cache and Dalvik and if possible a Factory Reset.
I know you said: "It won't go into recovery or download mode." But there is no other way.
In my cases Tab3 10 Wifi I can not get the battery out. But since you are saying that you can, I will suggest you unplug the battery for a minute. Hoping that when you reconnect it it would not turn on by it self:
1) Turn your PC On.
2) Start Odin3.07 and prepare to install your Original Stock ROM.
3) Connect the USB Cable to PC but NOT to TAB. As you see we only want to be ready to install Stock Rom is everything goes OK.
4) Disconnect the Battery on Tab, (If not possible Press Power for 6-8seconds and release, If it reboots Press Power for 6-8seconds and release. Keep trying until you see it stop doing the loop with Samsung logo. We are trying to ensure is in OFF and that it does not reboot)
Note: Please understand that if you keep pressing [Power] or any other sequence of buttons longer that 8 seconds it just loop once and nothing happens. You need to release the [Power] button.
5) Wait a minute disconnected. (OFF)
6) Reconnect Battery. This is where I an hoping that the Tab will not Turn On by itself! I do not know I never disconnect my battery.
7) Be prepare to Hook the USB cable from PC. Now Press ONLY [Volume Down] and Hook USB cable at the same time. It is been said that when we press Just [Volume Down] from OFF the battery registers are reset and the Battery Icon comes up in your screen!! At least this behavior work in TAB3 10 Wifi. I am not sure in yours.
If you see I am just trying to get away from the "Loop on Reboot" situation. And I believe it your best chance to ensure is in charging state. If you like you can leave it charging for at least 1 hour with the battery logo. If the battery logo goes away and you want to check if it is still there DO NOT USE [Power] BUTTON. use the [Menu] instead. In fact in this mode you can unhook the PC USB cable and Plug your Power Adapter with I believe is twice as effective charging than the PC USB.
Now lets say that when you unplug and reconnect the battery, Tab3 instead Reboot (power on) Then what I will suggest you is to get help from some body else so that you have an extra pair of hands. The Idea is that if it power on by it self ,that you can be only in charge of Pressing Just [Volume Down] while hooking USB cable. The other person will be in charge on reconnecting the battery. I hope you get my point.
Lets continue
8) So now that you have a TAB charged you can ensure that PC is connected to USB cable and Odin is ready.
9) With the battery Icon on the screen, now you can Press [Power]+[Menu]+[Volume Down]. to get in to Download Mode. Note that In my case a TAB3 10 Wifi I do not need to press [Menu], Just Only [Power]+[Volume Down].
10) Follow any Tutorial in the use of Odin for your device. Just be sure NOT to mark "Re-Partition" unless you had received a packages that requires that. If you do not know that means it is NO repartition. Understand that re-partition without having a complete package will Brick your device. Most Odin packages have only the minimum packages so do not required re-partition. You been warned.
I hope this will help you.

r2d23cpo said:
@fubofo
......................................
1) Turn your PC On.
2) Start Odin3.07 and prepare to install your Original Stock ROM.
3) Connect the USB Cable to PC but NOT to TAB. As you see we only want to be ready to install Stock Rom is everything goes OK.
4) Disconnect the Battery on Tab, (If not possible Press Power for 6-8seconds and release, If it reboots Press Power for 6-8seconds and release. Keep trying until you see it stop doing the loop with Samsung logo. We are trying to ensure is in OFF and that it does not reboot)
Note: Please understand that if you keep pressing [Power] or any other sequence of buttons longer that 8 seconds it just loop once and nothing happens. You need to release the [Power] button.
5) Wait a minute disconnected. (OFF)
6) Reconnect Battery. This is where I an hoping that the Tab will not Turn On by itself! I do not know I never disconnect my battery.
7) Be prepare to Hook the USB cable from PC. Now Press ONLY [Volume Down] and Hook USB cable at the same time. It is been said that when we press Just [Volume Down] from OFF the battery registers are reset and the Battery Icon comes up in your screen!! At least this behavior work in TAB3 10 Wifi. I am not sure in yours.
.....................
I hope this will help you.
Click to expand...
Click to collapse
@r2d23cpo thanks for this information, though there is a problem. As soon as I unplug it from the wall charger it stops the reboot loop and just does nothing.
Also....why do I need to connect it to PC via USB with Oden if we are not yet going to flash it? Would the wall charger works just as well after I connect the battery? (disconnect battery, wait 1 minute, reconnect battery, Hold Vol Down + connect charger)

fubofo said:
Hey guys, have a friends Galaxy tab 3 (7 inch, SM-T210) which simply won't power on.
Firstly, the device came to me because it was completely dead. He is using an Apple charger (5v 1A) which I believe isn't the right output.
After leaving it plugged into the Apple wall charger for more than a full day, it will power on the display and go into a boot loop (displays Samsung logo for about 10secs then reboots)....
Click to expand...
Click to collapse
I've noticed this with the Apple charger. But only with this particular model. I experienced none with the SM-T217. Other Samsung devices also charge fine with the same charger. The tab wouldn't show the battery icon at all, and the screen kept flashing. I left it plugged in for 1/2 hour and it moved up 1%. I don't believe it's the amp, 'cause the tab charged fine with a 1A Samsung or LG. You should switch to another charger first lest it damages the battery somehow.

graphdarnell said:
I've noticed this with the Apple charger. But only with this particular model. I experienced none with the SM-T217. Other Samsung devices also charge fine with the same charger. The tab wouldn't show the battery icon at all, and the screen kept flashing. I left it plugged in for 1/2 hour and it moved up 1%. I don't believe it's the amp, 'cause the tab charged fine with a 1A Samsung or LG. You should switch to another charger first lest it damages the battery somehow.
Click to expand...
Click to collapse
This Tab doesn't ever get to the point of showing the charging icon. I currently have the device plugged into USB port of my server as it's powered on 24hrs. I'm happy to leave it in there for a few days to see if it charges better.
My hope is that it will at least get to the boot loop stage, and maybe show up as a connection on my server so I can fastboot it or something.

fubofo said:
This Tab doesn't ever get to the point of showing the charging icon. I currently have the device plugged into USB port of my server as it's powered on 24hrs. I'm happy to leave it in there for a few days to see if it charges better.
My hope is that it will at least get to the boot loop stage, and maybe show up as a connection on my server so I can fastboot it or something.
Click to expand...
Click to collapse
Not to belabor the point, but mine wouldn't charge at all at 500mA, which is what my regular cell charger outputs. So unless your server delivers more punch than standard USB ports on PCs, looks like you're in for a long and futile wait. Just my guess.

S 3 Start-Up Problem

Hello,
I am having an issue with my S 3. It is not booting up as it should. The model is SGH-1747M.
I have tried the following and have had the following results:
1) The phone is non-responsive when attempting to power it on with the power button.
2) If I remove the battery, with the phone not plugged in, and then put the battery back in, the phone begins to power on by itself. It vibrates once and then loads to the Samsung screen and then goes off.
3) If I plug the phone in without the battery, the phone vibrates once and the red charging light comes on but then goes off after a couple seconds.
4) If I plug the phone in without the battery, and then insert the battery as soon as the red light comes on, the charging screen comes on but then the phone goes off after a couple seconds.
5) If I put the battery in with the phone unplugged and hold Volume Down, Power and the Home Button, the phone boots to the screen where you can push up on volume to flash new firmware. If I stay on this screen without pressing anything, the phone turns off after a couple seconds. If I push up on the power button, it goes to the screen with the green android man but then turns off after a couple seconds.
6) If I put the battery in with the phone unplugged and hole Volume Up, Power and Home and then release them on the Samsung screen, blue writing pops up in the top left corner (I couldn’t read quick enough what it says) while still on the Samsung screen and then it loads to a screen saying Samsung Galaxy S III and then the phone turns off.
These problems started when I attempted to connect my phone to my laptop to transfer songs over to it. I connected the phone and the battery was charging, but it wasn’t showing up as connected on my laptop. So, I turned the phone off to restart it but when I went to turn it back on, these issues started.
The phone was rooted and has been for the last 7 months without any changes to the firmware or updates to the firmware in that time period and has not encountered any problems prior. I’m not sure what firmware the phone was on prior to this.
If anyone could offer any assistance with this it would be greatly appreciated.
Thank you in advance.

Hi,
I'm no expert, but it looks like a faulty/stuck power button. It's normal for the phone not to completely boot up when it is powered off and then plugged in to USB. But it is not normal for the phone to reboot itself when in recovery or in Android. That's why I think the power switch might be the cause.

Suggestions for things to try with bricked 5x

I was getting a notice on boot that said "Your device is corrupted and cannot be trusted," so I held down the power and volume down buttons to get it to fastboot mode. However, I couldn't get it to be recognized in fastboot on my laptop. At one point I selected "reboot bootloader" and the phone promptly shut off, black screen and completely unresponsive.
From that point on, I can't get it to do anything. I've tried holding power + volume down for 20 seconds and then plugging it in (as noted in another thread) as well as taking it apart and disconnecting the battery to see if that would reset it somehow. No dice.
Any other suggestions before I give up? Thanks very much in advance...

olm3ca said:
I was getting a notice on boot that said "Your device is corrupted and cannot be trusted," so I held down the power and volume down buttons to get it to fastboot mode. However, I couldn't get it to be recognized in fastboot on my laptop. At one point I selected "reboot bootloader" and the phone promptly shut off, black screen and completely unresponsive.
From that point on, I can't get it to do anything. I've tried holding power + volume down for 20 seconds and then plugging it in (as noted in another thread) as well as taking it apart and disconnecting the battery to see if that would reset it somehow. No dice.
Any other suggestions before I give up? Thanks very much in advance...
Click to expand...
Click to collapse
my device is for the most part of the time in qualcomm mode, but I managed to have access to the phone 3 days ago, installing apps & stuff, worked perfectly well until I had
the bad idea to try to charge it through the charger instead of charging it through my computer...
how I've done it?
I used the power reboot technic :
1) pressing the power button for 1 minute
2) doing nothing for some seconds
3) pressing the power button again for 1 minute
4) connecting the phone to the charger, the red light flashed
5) the battery icon appeared soon after
6) waiting for complete charge, phone rebooting
it worked once, so I suppose it can work again. fingers crossed.

Stuck in low battery boot loop

Hello, Huawei gadget friends.
My watch started to go in to a "low power boot loop" a week ago so I left it alone hoping a full drain would restore it back to working condition, but alas not.
So now this is the situation:
1) press button, nothing happens
2) connect to power shows the charging icon (white battery with power sign) and then after a few mins commences a boot loop as follows
3) from the charging icon, then gives the "Device software can't be checked for corruption..." message
4) followed by the red Huawei logo, then a single vibrate and then back to step 3 above
5) removing the watch from the charger stops the boot loop but then shows the low battery icon (white battery with one bar).
In one or two occasions, I saw it boot up to the colorful spinning 4 android wear logo, but did not complete (did not show "Android Wear" before rebooting again.
I have tried getting it to recovery mode screen or fastboot but without success -- I keep getting the second buzz without fail.
When the beta of 1.5 came out, I tried it, but since then, have wiped my mac and don't have the adb/fastboot software anymore. From reading the forums, there is now some new software called TWRP. Please advise what I can do.
Would I be right to suspect that it is some battery problem? Is it beyond help? :crying:
Thanks in advance!
MMM
Edit: I have also left it on for several hours charging (and rebooting constantly), thinking that perhaps it is just low battery -- but no success.

I'm experiencing the same problem, i turned it off yesterday at 17% and connected to the pc this morning to charge. I immediately noticed that it started looping with the white icon and it doesn't turn on, nor boots into download mode.
Have you found any way to restore it?
Mine doesn't show the red HW logo, charged for some hours and nothing.
I noticed that the pc see that there's something connected, but keeps saying "USB not recognized". I don't know what to do, i may open up and disconnect the battery
EDIT: SOLVED, it was just the cable that broke somehow. I soldered a new cable to the circular base but that didn't work, but as soon as i received this i connected to the pc and started pressing the button randomly till it showed the battery logo and started charging

I got this when I plugged it into my laptop. Plugging it into a dedicated USB charger solved my problem - I suspect the power rating on the USB socket wasn't high enough to charge effectively or that the USB socket is faulty in some other way. From what I understand, not all USB sockets are equal in that some are suitable for high-drain devices, some not so much. So trying another USB port on your computer may also help (Unfortunately at the time I was backing up to an external HDD on the other USB so that option wasn't open to me).

guyz, i have tried my method it actually worked on Xperia X Perfomance
When it goes to Bootloop for Drained battery, i just plug the cable and perform activity block method By pressing and holing power and both volume up and down and when it hits the 1st viberation i just simply release the key. (remember dont hold it too much long after 1st single viberation just release the keys ) and your phone will go to block activity mode. charging light will change it colors from red to blue.. after 2 minutes just press power button then you ll get another viberation and your phone will be seen as charged 2% and then it will be normal again...
i think it happens when battery drained and phone is unexpectedly trying to go boot in first place.
thank you