Does anyone have a ROM that can run without the battery? - Samsung Galaxy Tab A series Questions & Answers

EDIT: Thanks for moving my thread, whoever you are! It's my first time making one of these, anyway.
So back in March my SM-T350 wasn't booting, and I had already tried charging it and stuff. Then my dumbass thought it would be a good idea to try and re-seat the non-removable battery. Surprisingly, the battery connector came out fine the first time, but then I got cocky, and well... it snapped right off the mobo when I tried to re-insert it. The tablet just shows the "charging while off" icon when plugged in, turns the screen off, then repeats. I can get into TWRP AND the ODIN Download mode. Does anyone have a ROM (preferably nougat if stock-based or oreo if fully custom) that will boot off of just AC power from the Micro USB Port?

Hello? Anyone?

Related

8125 Dead

I have a 8125 and I was able to unlock it fine. After unlocking it I upgraded to the underground crossbow edition rom - which the 8125 rebooted and was running. I tried out a couple things and everything seemed to be running/working fine. It was getting late so I put it down and went to bed. This morning when I got up the phone was off so I went to turn it on and nothing happened. I figured it just ran out of battery power plugged in the charger and guess what no red light on. I have tried everything under the sun but I cant get it to charge or startup. Anyone have any ideas? It was working fine.
i know u said u've tried everything and i don't mean to sound like i'm takin the buscuit, but leave it on charge for n hour, then try bootloader. taking the battery out completely for a while could work.
i had so many problems with crossbow! think this was one of them.
Unplugged
Well so far I left the charger plugged into the phone with the battery in it for over an hour now - with no luck. The red charging light doesn't even come on. Did you have that problem? I also left the battery out and plugged in - still nothing. Tried taking the battery out and then putting it back in while plugged in - no go.
I have not tried the "bootloader" - but the phone will not turn on at all or respond in anyway. Its in a powered down state (or so it seems) - I dont think bootloader will work?? But I dont know anything about bootloader - is it on the ftp site and how do I use it?
Any chance the battery could have been completely discharged?..just a thought. I think i read that completely flat batteries wont charge up via usb. Disregard if thats a silly suggestion, just thought id offer my two cents.
try getting a new battery and see if it boots up...it can be your battery.and you are trying to charge with an AC adapter right?
Wall Charger
I am charing it via the wall charger (not usb) and I am going to try to get another battery. Just weird that I never had a battery problem until I install the wm6??!! Unless the damn thing drained my battery dry and somehow damaged the battery. I called Cingular and they are sending me another unit as its still in warranty. So we'll see when I get it - I will try the new battery. Strange. Very Strange - because everything was working last night.
Strange
Well after leaving the battery out all afternoon I took a go at the phone again, put in the battery then turned it on. It actually started booting up - showing the WM6 bootscreen. After about a minute it shut down like it was out of power. Strange. I know the phone is not bricked because if it was it wouldn't have just done what it did. Anyone have any suggestions how to fix it?
Could be a bad battery. You need to test out with some one else battery
HuddaDudda said:
Well after leaving the battery out all afternoon I took a go at the phone again, put in the battery then turned it on. It actually started booting up - showing the WM6 bootscreen. After about a minute it shut down like it was out of power. Strange. I know the phone is not bricked because if it was it wouldn't have just done what it did. Anyone have any suggestions how to fix it?
Click to expand...
Click to collapse
HuddaDudda said:
Well after leaving the battery out all afternoon I took a go at the phone again, put in the battery then turned it on. It actually started booting up - showing the WM6 bootscreen. After about a minute it shut down like it was out of power. Strange. I know the phone is not bricked because if it was it wouldn't have just done what it did. Anyone have any suggestions how to fix it?
Click to expand...
Click to collapse
u shud have plugged it in while it was booting...did u?
New Battery
Well I finally got the new battery I ordered today. When I put it into my phone it will boot into wm6 fine but will not sync with activesync 4.0 or charge via USB or plugged into the wall. I uninstalled activesync, rebooted my computer and installed Activesync 4.5 - but still no luck with the phone via usb syncing with my pc. Also when the phone in plugged into the wall via the wall charger it does not charge. I am beginning to think the port on the bottom somehow was disabled from the rom update, although I dont see any posts with people having that problem. I guess my next option is trying to reflash it to stock rom via a sd card since it wont connect via USB - however I can not find the information step by step how to do this. Can someone point me in the right direction?
Try going to the bootloader screen: Turn off your phone and then hold the camera button while you turn it on. When you are at the Rainbow screen (thats the bootloader) plug in your USB cord. You should see in the bottom left (above the left soft key) where it says USB. If it doesn't then I'd say your USB port is broken (I'm not aware of any ROM being able to disable that).
As for flashing from the SD card, I believe thats documented in the Wiki...

[Q] softbricked with no info

Ok my buddy has an atrix 4g for ATT. he 'said' he was in cwm and loading a rom and now its softbricked. though i am familiar with droid, after reading recovery threads and everything, im still unsure of my resolution. most threads tell me i need an unlocked bootloader, others say not to flash if you were on this version. Honestly i have no idea if the BL is locked, what version or update he was on. at the moment it says failed to boot, starting RSD mode, battery is too low to flash.
A. will it charge while it says that or how should i charge it in this state?
B. after it does charge, what should i flash to it?
I apologize that i dont have much information. you have no idea how long it took me to find the power button lol. I appreciate any and all suggestions. Thanks
You definitely need to get more information from him before you can do anything. If his bootloader wasn't unlocked, then he was likely trying to flash one of the P-Roms like Greyblur or Gingerblur, in which case your solution will be a lot messier since the only way I remember accessing recovery back then was by using Tenfar's CWM app that reset it to recovery w/ a wall charger.
As for charging the phone, I don't recommend keeping it on and plugged in, in the chance that it doesn't charge and you are left with a dead battery. When the phone is completely off and you plug the charger in, do you see the charging battery?
When the phone is plugged into the wall charger it boots up automatically and says failed to boot 1, starting rsd, battery too low to flash. If I plug it into my pc the green power light turns on but nothing else happens. I never get any pictures on screen. No battery and no motorola logo. He was on 2.3.4 but he took his sd so I couldn't see what he was trying to flash. I will try to get more info
Sent from my DROID3 using XDA App
Same thing happened to me, and I can assure you it doesn't charge in that state. I have to find a way to charge the battery now... It is 0% dead. I hope I can use RSD Lite to fix it when it is charged.
alright, what happened was his battery was too low to finish the flash. it died halfway through, and now the phone is in some sort of limbo state that is just completely unusable.
but, if you have a spare USB cable you can fix this.
http://www.youtube.com/watch?v=EQ6JNCvIe8k
just watch that video, and let your phone charge for about half an hour to 45 minutes. after that, reflash the pudding .sbf with rsdlite (unless you can boot into recovery, then you can just reflash any ROM)
If you can boot the phone into recovery by holding the volume down key when powering on, then simply find the alien rom, save onto your SD card from the PC, then install in recovery...then you should be able to reboot into a working phone and charge. If you can't boot into recovery, and the phone is stuck on the "starting rsd protocol" screen, than...I think its a paper weight, but I could be wrong.
Although this problem could probably be fixed by an earlier post, I'm curious....
what would happen if you plugged it into the wall charger, let it boot up into the boot loop, then pulled the battery, left it out for 30 seconds, then put it back in. (this is without unplugging it from the wall charger). Does it allow the phone to stay off and charge, or does it still automatically boot up? Just curious.
im gonna look at the youtube video. ive got a D3 and i saw where a kid had cut a usb cable and made something work for 30 minutes and was able to flash again, but i was def trying to avoid that lol. also, there is no loop really. it doesnt restart, it just sits there. when the battery is pulled, it still stays on the same screen and never powers off until the charger is removed. i may see if i can get a new battery. i really apprecaite the feedback
Phalanx7621 said:
Although this problem could probably be fixed by an earlier post, I'm curious....
what would happen if you plugged it into the wall charger, let it boot up into the boot loop, then pulled the battery, left it out for 30 seconds, then put it back in. (this is without unplugging it from the wall charger). Does it allow the phone to stay off and charge, or does it still automatically boot up? Just curious.
Click to expand...
Click to collapse
It will not charge in this state
well my only option at this moment is to try the usb trick. im trying to strip the wire and hook it to the connector on the phone and then just smash teh battery on top of it, but i have no idicator light, so i dont know if its charging. would it charge if i tape/rig/solder it to the battery itself and not have it in the phone? i really dont wanna try a wall outlet charger
I am going to splice a cable and report back with results. My only other option is to charge the battery in my friend's Droid X
If that fails, to AT&T I go.
i havent been able to get it to charge through the usb using the red and black wires. i was very careful and have a decent set of tools to work with. he can buy the external battery charger for $30 if he'd like. im not really sure what else to do at this point.

7.7 Down for the Count

Used my device last night to do some reading and the battery was about half full.
Went to use it tonight, won't turn on. Thought something killed the battery, so charged it for an hour.
Held power button, nothing. Tried volume up then power, nothing. Finally got it to do something by pressing volume down and power. It comes up to the Odin screen.
I've never rooted/loaded any roms or anything, so anybody have any idea what the heck happened or how to get my device back to normal?
Thanks for any help.
Have you used the stock AC wall-charger to charge it up?
Yes, it's charging now while I am reading all about using Odin and downloading a stock firmware...
Not that I know what I'm doing <grin> I'm hoping it powers up after I charge it some more before I go mucking with it...
Thanks, Samsung! I'd much rather be having this fun instead of reading a book. Where is the damn ICS update? Honeycomb sucks.
I would let the battery go flat which is the same as removing the battery on a phone and hope that allows you to re-boot normally after charging then I would try a factory reset to clear any problems before going down the re-flashing road.
Well, looks like letting the battery go flat is my only option because after charging all night it now won't even go into Odin Mode.
Do you have a general idea how long it will take for the battery to die since there are no indicators? Should I expect days/weeks?
Sure wish I could pull the battery or use the paperclip trick like on other devices. This thing is a very expensive (imported) paperweight right now.
EDIT: Any idea why I couldn't get to the boot loader (volume up + power) to reset the device but the Odin mode worked?? I don't think it's the button, this device has been coddled. Just sits on my nightstand until I read a little at night and put it back.
Uh 九千., I'd thank you twice if I could.
So I go to pull the usb cable and wall charger behind my nightstand to bring to work and it's NOT the original charger. I forgot it came with the European power adapter so I had to use a generic USB charger.
I grabbed the Samsung wall plug from my 8.9 and now it shows the battery with a yellow exclamation mark. I'll try charging it and go from there.
Very strange, considering I've been using the other usb wall charger since I bought the device maybe six months ago...
I'm hoping for the best!
EDIT: IT BOOTED and it's charging... What a relief. Thanks for the help guys.
EDIT 2: So before, it was NOT charging... It got so low that only the Samsung wall charger could get it going??? Very strange.

[Q] Charging Problem - Verizon xt907

Trying to fix a family members xt907 so here's the situation which has been nothing but headaches for me:
1. The Phone is only 7 months old and the bootloader is unlocked so warranty exchange is out of the question. She let the battery run down until the phone died. Then without charging the phone she turned it back on and it died again. From that point she couldn't get it to charge or turn back on while plugged in. At this point she brought it to me.
2. I got the phone and did a soft reset which finally got the charging screen to come up (showed the actual charging icon and the fill meter would flash up and then back down periodically). Problem is it never went past 0% after charging all night. I went ahead and tried to power it up thinking maybe it was just a glitch with the charging screen. Phone wouldnt boot. Just stuck at the Motorola logo. Another soft reset and the phone finally boots but now the battery icon showed a '?' and status showed '5% - Unknown'.
3. Performed a factory reset. No change. So I used RSD to flash the stock 4.1.2 firmware/kernel/modem, etc... What I found strange here is that despite the low battery Fastboot AP showed battery as OK, not low and let me flash (bootloader is unlocked, not sure if that affects low battery flashing or if that safeguard just wasnt built into the M).
4. So phone boots back up and shows 7% battery. Plugging in the charger at first notice has no affect. Battery stats shows '7% - Not Charging'. So I unplug the charger and the low battery warning pops up. Plug it back in and phone still doesnt register as charging, but says 'Not Charging'. Then I notice that the lockscreen shows '7% Charging'. Weird. Regardless of all that, the battery was not charging. The percentage never goes up and after reboots the percentage will remain the same. The battery does slowly discharge on the charger if I have it powered on.
5. I tried flashing a couple different roms before flashing back to stock and all had the same problem. I've formated /system hoping it was a problem with the OS but it didnt help. All of these charging tests were performed with the stock Motorola usb cable plugged into the wall charger. I tested the Motorola charger against my S4 to verify it works and also tried my Samsung charger on the Razr and it made no difference. However, booting the Razr M up with the Samsung charger resulted in the '?' in the battery icon and a notification in the status bar saying something about a CommServer starting. This notification was persistant and could not be dismissed. If I reboot the phone with the Motorola charger or no charger then that notification and the '?' dont appear.
6. I should also point out that I opened the phone up and disconnected the battery from the board and discharged the board. As a last resort I completely removed the battery and peeled back the tape on the bottom of the battery to expose the + and - terminals on the battery and wired it up to a stripped down charger and left it for a bit. Upon putting the battery back in the phone it showed a charge of 30% but still had all the same problems otherwise. So the battery is capable of taking a charge, it just wont take it through the phone, whether powered on or off. Thats what leads me to believe the battery itself is not bad. Its not practical for her to pull the battery to charge it, obviously. The phone detects the cable being plugged in and I can transfer files via usb cable to/from the computer no problem, so I'm fairly sure the Micro usb port is ok. Just refuses to charge.
A little lengthy but I'm at my wits end on this and really dont want to have her buy a $50 battery and then its a problem with the phone. I dont usually get stumped when it comes to fixing something but this one really has me. So if anybody can shed some light on this situation it would be greatly appreciated.
CallMeAria said:
Trying to fix a family members xt907 so here's the situation which has been nothing but headaches for me:
1. The Phone is only 7 months old and the bootloader is unlocked so warranty exchange is out of the question. She let the battery run down until the phone died. Then without charging the phone she turned it back on and it died again. From that point she couldn't get it to charge or turn back on while plugged in. At this point she brought it to me.
2. I got the phone and did a soft reset which finally got the charging screen to come up (showed the actual charging icon and the fill meter would flash up and then back down periodically). Problem is it never went past 0% after charging all night. I went ahead and tried to power it up thinking maybe it was just a glitch with the charging screen. Phone wouldnt boot. Just stuck at the Motorola logo. Another soft reset and the phone finally boots but now the battery icon showed a '?' and status showed '5% - Unknown'.
3. Performed a factory reset. No change. So I used RSD to flash the stock 4.1.2 firmware/kernel/modem, etc... What I found strange here is that despite the low battery Fastboot AP showed battery as OK, not low and let me flash (bootloader is unlocked, not sure if that affects low battery flashing or if that safeguard just wasnt built into the M).
4. So phone boots back up and shows 7% battery. Plugging in the charger at first notice has no affect. Battery stats shows '7% - Not Charging'. So I unplug the charger and the low battery warning pops up. Plug it back in and phone still doesnt register as charging, but says 'Not Charging'. Then I notice that the lockscreen shows '7% Charging'. Weird. Regardless of all that, the battery was not charging. The percentage never goes up and after reboots the percentage will remain the same. The battery does slowly discharge on the charger if I have it powered on.
5. I tried flashing a couple different roms before flashing back to stock and all had the same problem. I've formated /system hoping it was a problem with the OS but it didnt help. All of these charging tests were performed with the stock Motorola usb cable plugged into the wall charger. I tested the Motorola charger against my S4 to verify it works and also tried my Samsung charger on the Razr and it made no difference. However, booting the Razr M up with the Samsung charger resulted in the '?' in the battery icon and a notification in the status bar saying something about a CommServer starting. This notification was persistant and could not be dismissed. If I reboot the phone with the Motorola charger or no charger then that notification and the '?' dont appear.
6. I should also point out that I opened the phone up and disconnected the battery from the board and discharged the board. As a last resort I completely removed the battery and peeled back the tape on the bottom of the battery to expose the + and - terminals on the battery and wired it up to a stripped down charger and left it for a bit. Upon putting the battery back in the phone it showed a charge of 30% but still had all the same problems otherwise. So the battery is capable of taking a charge, it just wont take it through the phone, whether powered on or off. Thats what leads me to believe the battery itself is not bad. Its not practical for her to pull the battery to charge it, obviously. The phone detects the cable being plugged in and I can transfer files via usb cable to/from the computer no problem, so I'm fairly sure the Micro usb port is ok. Just refuses to charge.
A little lengthy but I'm at my wits end on this and really dont want to have her buy a $50 battery and then its a problem with the phone. I dont usually get stumped when it comes to fixing something but this one really has me. So if anybody can shed some light on this situation it would be greatly appreciated.
Click to expand...
Click to collapse
I presumed you tried to wipe the battery stats via the battery calibration app? not that I think it would make a difference. another option is enable/disable USB debugging. you could also try charging into a PC or a different outlet (perhaps that outlet does not provide a good current)?
not really sure, just tossing out some ideas...
jco23 said:
I presumed you tried to wipe the battery stats via the battery calibration app? not that I think it would make a difference. another option is enable/disable USB debugging. you could also try charging into a PC or a different outlet (perhaps that outlet does not provide a good current)?
not really sure, just tossing out some ideas...
Click to expand...
Click to collapse
I actually installed cwm recovery just to wipe battery stats. Im assuming it works the same way but I'll give the app a try. I'll try anything at this point. Tried your other ideas already though and didnt make any difference.
I appreciate the input. I'll give that app a try and see if it does something different from wiping battery stats in recovery.
CallMeAria said:
I actually installed cwm recovery just to wipe battery stats. Im assuming it works the same way but I'll give the app a try. I'll try anything at this point. Tried your other ideas already though and didnt make any difference.
I appreciate the input. I'll give that app a try and see if it does something different from wiping battery stats in recovery.
Click to expand...
Click to collapse
Doubt it. However, the issue seems to be with the hardware, and since it is not a software issue, Motorola could honor the warranty. Last resort would be to unroot and see if you can get an exchange.
Sent from my XT907 using xda app-developers app
have you tried a non moto cable? the one that came with my fone was total crap, would continuously connect and disconnect when i hooked it up to my comp or try to charge it, so i tried my old samsung cable and i didnt have any disconnect problems at all. just a suggestion
CallMeAria said:
I actually installed cwm recovery just to wipe battery stats. Im assuming it works the same way but I'll give the app a try. I'll try anything at this point. Tried your other ideas already though and didnt make any difference.
I appreciate the input. I'll give that app a try and see if it does something different from wiping battery stats in recovery.
Click to expand...
Click to collapse
Did you ever find a solution? I am having the same issues with my xt907.
What did you have it plugged in to? The fact that it said it was not charging indicates maybe you didn't have enough power coming through the charging port...
Sent from my XT907 using Tapatalk 4 Beta
uthkuknwme said:
have you tried a non moto cable? the one that came with my fone was total crap, would continuously connect and disconnect when i hooked it up to my comp or try to charge it, so i tried my old samsung cable and i didnt have any disconnect problems at all. just a suggestion
Click to expand...
Click to collapse
yeah I tried my Samsung cable as well.
jgramkow said:
Did you ever find a solution? I am having the same issues with my xt907.
Click to expand...
Click to collapse
No. Verizon finally sent her a refurb replacement. I got the battery to charge up by taking it out and rigging a charger to it. But the phone still wouldnt accept a charge with the battery back in and it lost the charge it did have 2-3 times faster than normal. Battery Stats also showed the battery was showing a pretty decent voltage so unless the battery itself has a low charge circuit that gets tripped I'd be hesitant to point to the battery itself. And the charger port transfered files just fine and the phone recognized when the charger was plugged in (would go from 'discharging' to 'not charging'. So yeah, I was left stumped. Hopefully somebody else can get this solved for you.
CallMeAria said:
yeah I tried my Samsung cable as well.
No. Verizon finally sent her a refurb replacement. I got the battery to charge up by taking it out and rigging a charger to it. But the phone still wouldnt accept a charge with the battery back in and it lost the charge it did have 2-3 times faster than normal. Battery Stats also showed the battery was showing a pretty decent voltage so unless the battery itself has a low charge circuit that gets tripped I'd be hesitant to point to the battery itself. And the charger port transfered files just fine and the phone recognized when the charger was plugged in (would go from 'discharging' to 'not charging'. So yeah, I was left stumped. Hopefully somebody else can get this solved for you.
Click to expand...
Click to collapse
Just an update: I ended up buying a replacement battery and it fixed the charging issue. I rsd back to stock. Then, playing around with it, I booted to bootloader and selected "Factory" and it immediately booted back to stock, but, the battery had a "?" again. Ready to throw the damn phone against the wall, I rebooted it. The "?" is mysteriously gone. What is the "Factory" setting? I think I tried it before, but had CM10.1 installed. My theory is that this "factory" boot from bootloader actually soft bricked the phone. Either that or the issue was truly the battery and simply replacing it fixed things. I am up and running now, cm10.1 is flawless, imho. Thanks for the quick reply and I hope this helps anyone with similar issues.
Beware of the "Factory" bootloader option...........
Here we go again. Upon a reboot into recovery. Recovery is twrp 2.5. What I notice is the motorola boot img takes an extremely long time (2 minutes) to turn off and cyanogenmod to begin. Could there be something corrupt in the bootloader? Is there any way to reload the bootloader on this device? Anyone have any ideas? Could it be Recovery?

S5 Strange USB/Power Issues

The other morning I woke up and my phone would not turn on after being on the charger overnight on the night stand.
I removed the battery, power drained the device and still the device would not post.
So I grabbed my spare battery and tried that, still no post.
I plugged in my device and noticed the charging light was not coming on, so i tried a different adapter and yet again no change.
I disassembled the phone and swapped out the USB flex cable with a new one, still no change.
So I plugged the device into my computer and I received a battery gray battery image that flashes away almost immediately.
I unplugged the phone held the power button down and plugged the phone back in. I received the Samsung writing with the model number but the device just goes back to the grey battery and flash away,
I attempted to boot the device to recovery mode but it just loops back to the grey battery,
I had then decided to try download mode with odin and restore the stock ROM. I can get the device into download mode but no computer recognizes the device in device manager or odin.
I have removed and re-installed the battery while in download mode and any computer will still not recognize the device.
I noticed one strange thing. If i remove the USB cable from the phone while it is plugged in the phone powers off and will not turn on until it is plugged into a power source.
It is almost as if the phone does not recognize that the battery is even plugged in!
If anyone has any ideas or could possibly point me in the right direction that would be greatly appreciated!
Thanks guys in advanced if anyone can offer any information on this issue!
Also, the phone is out of warranty!

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