Help getting S7 out of recovery loop? - Samsung Galaxy S7 Questions and Answers

There's a lot of aspects to this problem at this point, I'll try to be detailed.
I was recently given a bricked Verizon S7 (SM-G930V) to work on (full stock rom). The battery is completely dead, and when plugging it in to a high power charger it shows the recovery booting screen for 1-2 seconds, then black screen, then recovery booting again. So the recovery seems to be broken, and its putting it into a bootloop. From what I've been able to find over the last few days I believe it was caused by either a bad ota update, or it loosing power in the process of updating.
Im able to get it into download mode, but the recovery seems to be completely broken. I've left it on a charger overnight four times (combos of plugged in, on a pad, in download mode, and looping) and it hasn't charged at all.
When its on a high power charger I'm able to get it into download mode, but it dies as soon as i try to swap it to my pc. I have a high power official samsung wireless charging pad, but when its only on the pad its completely unresponsive. If I plug it into the charger and have it on the pad at the same time, im able to get it into download mode and switch it and get it to show up in odin.
I've tried flashing the latest verizon branded firmware, as well as the unlocked firmware (with various combinations of odin versions and settings) and I either end up with an error on the phone (odin/firmware too old) or it just completely fails and the phone turns off. Even when deselecting auto reboot in odin, after a failed attempt (complete(write) operation failed at various points) it reboots.
Only thing I can think of is that the charge pad + usb combo isnt providing enough power with a completely dead battery, but I don't have a working S7 to swap the battery into to charge it, and when its looping or in download mode its not charging at all.
Any ideas?

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Constant boot loop - can't even get download mode

I have a rooted stock phone that stopped working for no apparent reason (no new ROM flashed, no configuration change). It starts, shows the Samsung logo, and immediately reboots. I tried to put it in download mode, when i hold the 3 keys I see the download logo showing up, but it reboots after a few seconds anyway. after a while it will start looping through the battery charge screen (which shows the battery as empty). I tried 2 different batteries with no change. Any idea how to get something working again?
That almost sounds like some sort of power issue. Have you left it sit turned off until the battery was full?
Yes, I left it overnight and it just keeps flashing the battery screen and then resets. I also have an external charger and used it to charge the battery, so it's not an issue with the battery actually being empty.
Have you been able to get the phone into download mode previously?
Have you have dealt with a boot loop and performed an Odin recovery previously? If not, remember it can take a few tries to get download mode to pop up.
If you can't get Odin to go, you might try flashing with Kies.
I am wondering if your phone met with some kind of disaster when you weren't around (trauma or liquid).
anyone747 said:
I have a rooted stock phone that stopped working for no apparent reason (no new ROM flashed, no configuration change). It starts, shows the Samsung logo, and immediately reboots. I tried to put it in download mode, when i hold the 3 keys I see the download logo showing up, but it reboots after a few seconds anyway. after a while it will start looping through the battery charge screen (which shows the battery as empty). I tried 2 different batteries with no change. Any idea how to get something working again?
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Click to collapse
This sounds almost exactly like the problem I had with my Sidekick. In my case, it turned out to be a bad battery and a loose ribbon cable on the motherboard. I'd check those two things.
This happened to me as well, and the three-button method to get into download mode wasn't working. For some odd reason, for me to get into download mode all I have to do is hold down the power button + track pad, and it goes right into download mode... Maybe slightly different model?
Try that - power button + trackpad
Bootloops.
Not a guaranteed fix by any means but for troubleshooting purposes you may want to consider making a USB JIG. It will most definitely help you figure out just how serious the problem is and if it IS software related with a way to get it working again you will need the JIG anyway so its worth a shot. If nothing else you learn a new skill and you're the proud owner of an incredibly useful tool that you can say you made yourself. good luck!
I know this post is kind of old, but it just happened to me last week (same circumstance, a rooted phone, but stock). I ended up just pulling the battery out and pressing the power button a couple times to hopefully drian it and letting it sit for 15 minutes, and then I put the battery back in and it worked again. I now have another rom flashed on it, I hate stock.
I know this forum is ancient, but I'm working on an E-Bay phone with this exact issue. I found the following thread the most useful and informative on the problem:
http://forum.xda-developers.com/showthread.php?t=1996709
Hopefully this helps other.
what i did was hold the power volume and button between the menu n back with the left hand YES HOLD IT UNTILL THE PIT IS UPLOADED. then u can let go then slide in the vattery with the right.while checking off the flash bootloarders on the heimdall with it fixing my phone XD
I had this happen, I dissassembled the phone, and used an alcohol pad to clean the power button area, and manipulated the button a lot, let it dry, reassembled...it still bootlooped.
BELOW IS RISKY BUT WORKED FOR ME
So while the back cover was off (exposing the cicuit board but everything still connected) I inserted the battery and watched it boot loop...during this, I used a flathead screw driver to "short" the power button pins...this let it boot fully, and it has been fine since.
i smacked the phones power button a few times and it worked

Xperia Z3 unable to charge - able to connect in flash mode - backup possible? wipe?

The problem:
My Z3 isn't charging at all, it's showing the charging screen and the red led is glowing for a few seconds, then it's turning off, showing the charging screen and the red led for a few seconds, turning off and repeats that without actually charging the phone. I can't turn it on, but I am able to get into flashmode by holding down the volume button and connecting it to my pc.
I already flashed the stock image. It's rooted and was running the latest official image. Locked Bootloader.
A few days ago it started changing the battery status every few minutes. Going from 12 to 50%, staying on it for a few minutes, going back to 20, to 6, just random numbers.
I used it today when it suddenly powered off. Despite being charged for one and a half hour in my car with the dock connector. Since then I am not able to turn it on or charge it.
What I already did:
Testing multiple chargers and cables, incl dock connector.
Tried to backup it with adb console, however it can't connect to my device. But I have zero experience with ADB, so I tried the flash tool from androxyde. It's connecting in flashmode and I was able to flash a stock image.
Am I able to backup the phone from the flashmode?
If not, am I able to wipe it so the service isn't able to view my personal data?
I hope somebody can help me :crying:
I was able to charge the phone now, I used both, the dock connector AND the USB connector cable. I don't know if it's damaging the battery but it seems to be broken anyway. Still giving out random numbers (was normal until it went past 10%, now it's jumping between 50% and the real number.
Sad thing is, I wiped all the data on the phone. Good thing is, if it wouldn't have turned on, nobody would be able to see my personal data.
It's time to give it to a service point I guess. I hope I get a new phone btw, seemed to have a faulty antenna as well the last weeks.

s7 is ded jim, no charge, no boot, no DL or recovery

Hey y'all this is my friends phone and he messed up. He was always having battery issues where it wouldn't take a charge and was constantly fighting with it over something. He thinks the phone is cursed. Here's what went down at the end;
Friend was flashing stock firmware to phone. Phone was stuck on one of the flash spots, not sure if BL, AP, CSC, etc as I was not there. Because it didn't appear to do anything and he didn't know to wait it out, he rebooted phone in the middle of flash. Now the phone is completely unresponsive! Plug it in, no response. Hold any buttons, no response. Changed battery, no response.
At my wits end with this phone Anyone have anything or any advice that will help save this phone? Mint condition, would hate to have to write it off.
You sure the battery has enough charge to power on? If you say the battery wouldn't take a charge originally
Holding: Power - Home - Volume Down until the device reboots a 2nd time sometimes gets them back into download mode
A bad ROM flash should not prevent the phone powering up, that sounds more like the original power issue
*Detection* said:
You sure the battery has enough charge to power on? If you say the battery wouldn't take a charge originally
Holding: Power - Home - Volume Down until the device reboots a 2nd time sometimes gets them back into download mode
A bad ROM flash should not prevent the phone powering up, that sounds more like the original power issue
Click to expand...
Click to collapse
Holding those buttons does nothing. Even when plugged into USB. I have tried multiple cables. I even installed new battery for s7 and nothing. Screen remains dead and phone has no image or vibration response. It just stopped working after his failed flash.

S3 Frontier - Download Mode (Wireless) - Not working

I recently purchased a "returned" S3 frontier. Out of the box, it worked for around 24hrs after being fully charged. I figured I was good to go. At the end of the second day of use (no charging), it shut down and froze. stuck on the logo screen. I've followed many tutorials on getting into recovery / factory modes to reset the watch and reboot. This only worked 1 time for me. The charger sits with the flashing red light. I've attempted rebooting many times. I've also told it to Power Off.... but when I stick it back on the charger to charge, it reboots and locks. Then the charger sits flashing red. I am also unable to figure out how to select wireless AP mode. I've followed those tutorials as well.
Something I noted, on the Download screen the Warranty Void is set to 1 and the Binary says custom. I really want to return this to factory if at all possible. Any factory firmware out there? R760NDAAXAR is the model.

S7 died, no response at all anymore. (Black screen)

Hello,
I am quite familar with samsung devices and flashing etc. but my friends phone died today I suppose. At some point it got stuck and got into a bootloop. After some reboots it tried to find a ota update.zip, but there was none. After some tries I got into download mode, but flashing a stock image (was stock before as well, never seen root or something) did help at first (it booted, we backupped some stuff) but at some point it got stuck into bootloop again.
This time, when going into recovery, it tried flashing a firmware again, however this ended badly (freeze while flashing). Now it's not even charging anymore. Not a single button combination is working (force reboot, recovery, download mode, ...) and when plugging into a power bank, it doesn't even charge anymore (power bank shows if a device is charging). So it's completely back and unnoticed by odin, adb or fastboot. Does anyone know this problem or have an idea, what we could try? My last idea would be to test a wireless charger, which i sadly do not have at hand.
Thanks!
Cloud2F said:
Hello,
I am quite familar with samsung devices and flashing etc. but my friends phone died today I suppose. At some point it got stuck and got into a bootloop. After some reboots it tried to find a ota update.zip, but there was none. After some tries I got into download mode, but flashing a stock image (was stock before as well, never seen root or something) did help at first (it booted, we backupped some stuff) but at some point it got stuck into bootloop again.
This time, when going into recovery, it tried flashing a firmware again, however this ended badly (freeze while flashing). Now it's not even charging anymore. Not a single button combination is working (force reboot, recovery, download mode, ...) and when plugging into a power bank, it doesn't even charge anymore (power bank shows if a device is charging). So it's completely back and unnoticed by odin, adb or fastboot. Does anyone know this problem or have an idea, what we could try? My last idea would be to test a wireless charger, which i sadly do not have at hand.
Thanks!
Click to expand...
Click to collapse
If it's not showing any signs of life and will not charge then it's a hardware problem, you should start with the obvious like the usb connector. You are going to have to open the phone and check usb connection, battery connection etc. but it may be easier to take to repair shop.
cooltt said:
If it's not showing any signs of life and will not charge then it's a hardware problem, you should start with the obvious like the usb connector. You are going to have to open the phone and check usb connection, battery connection etc. but it may be easier to take to repair shop.
Click to expand...
Click to collapse
but when it died the first time, i was able to flash the stock image; after it rebooted, it was charging perfectly fine until it died again. from that point on, i was not able to get any sign of life anymore... maybe something crashed that badly and it's still running and i have to wait for the battery to completely drain, so it can do something again? or is the charging process completely hardware dependent, so a crash shouldnt do anything?
Cloud2F said:
but when it died the first time, i was able to flash the stock image; after it rebooted, it was charging perfectly fine until it died again. from that point on, i was not able to get any sign of life anymore... maybe something crashed that badly and it's still running and i have to wait for the battery to completely drain, so it can do something again? or is the charging process completely hardware dependent, so a crash shouldnt do anything?
Click to expand...
Click to collapse
the way to test if it has power but blank screen is to hold power+volume down+home. If it has power it will turn off and boot into download mode
After the Forst Crash all such combinations didnt Seen to work either. Once odin recognized is while having a black screen. At that point I flashed stock :/ but still, not even the led was showing something

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