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Battery Drains Very Quickly.

So, I have a Samsung Galaxy Tab 2 7.0 P3110, but for the past month I have been experiencing battery drains very quickly. For instance, I would charge the tablet to 100%, but when i take out the charger I would experience a large loss of batter such as in 2 minutes I would lose about 20 % of the battery. So I wanted to replace my battery so I went to the Samsung Store in Westfield, where I went to the 'Smart Team' who I would thought replace the battery for me, but however they decided that they thought it was a firmware problem which I knew it wasn't, they took it to recovery mode where i had a custom recovery so they used that as an excuse, how that is the reason i'm experiencing this. I really wanted to go hell on that guy, since I had been rooted for over a year I was still on an official firmware. So I want to unroot this tablet and just go back to how it genuinely came out, i can't find a guide or somehow if someone can, just post it here please.

Harnessful said:
So, I have a Samsung Galaxy Tab 2 7.0 P3110, but for the past month I have been experiencing battery drains very quickly. For instance, I would charge the tablet to 100%, but when i take out the charger I would experience a large loss of batter such as in 2 minutes I would lose about 20 % of the battery. So I wanted to replace my battery so I went to the Samsung Store in Westfield, where I went to the 'Smart Team' who I would thought replace the battery for me, but however they decided that they thought it was a firmware problem which I knew it wasn't, they took it to recovery mode where i had a custom recovery so they used that as an excuse, how that is the reason i'm experiencing this. I really wanted to go hell on that guy, since I had been rooted for over a year I was still on an official firmware. So I want to unroot this tablet and just go back to how it genuinely came out, i can't find a guide or somehow if someone can, just post it here please.
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You can download the stock firmware from a website such as Samsung-updates.com and flash it using Odin to unroot. Just make sure after you flash the firmware you wipe data factory reset in the stock recovery so you don't get a boot loop.

Skazzy3 said:
You can download the stock firmware from a website such as Samsung-updates.com and flash it using Odin to unroot. Just make sure after you flash the firmware you wipe data factory reset in the stock recovery so you don't get a boot loop.
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Click to collapse
And if the flash counter had been tripped then you'll want to use triangle away to reset it.
jrc2
Sent from my T-Mobile S2 using Tapatalk.

Phone no longer updates?

Hey all, need some advice... I recently rooted my phone and found it wasn't for me (way too many apps stopped working). Because of this I tried to unroot the phone, but got stuck in a boot loop and had to recover from scratch.
Anyways, I'm running stock now and the system is back to being rooted. Problem is, I can't seem to update the phone. I'm not getting an error message either. Both Smart Switch and the phone simply say I'm up to date, but I'm on APB7 when I should be able to get APD3.
Is there anyway to fix this? Will I need to factory reset the phone? I'm not sure how to get the phone to recognize an update now.

Same here. I rooted my phone, installed TWRP but battery drain and apps not working properly made me go back to stock. Now I cant get any updates. I flashed APEQ fw yesterday dated June 8 but still dont get the June 17 updates.

I used Smart Switch to do an Emergency Reinstall of the firmware. Had to start over from scratch with my phone... It installed the lastest firmware though.
Been researching as much as I can online and it seems the consensus is simply unrooting the phone does nothing. You have to factory reboot. Tripping Knox won't stop you from getting updates but an unrooted phone that wasn't factory reset still won't get updates. Fun times. Last time I root my phone... Things aren't the same since I last rooted in Android 4.0. Now too many apps and updates etc. check for root and stop working if they detect it.

Luuthian said:
Hey all, need some advice... I recently rooted my phone and found it wasn't for me (way too many apps stopped working). Because of this I tried to unroot the phone, but got stuck in a boot loop and had to recover from scratch.
Anyways, I'm running stock now and the system is back to being rooted. Problem is, I can't seem to update the phone. I'm not getting an error message either. Both Smart Switch and the phone simply say I'm up to date, but I'm on APB7 when I should be able to get APD3.
Is there anyway to fix this? Will I need to factory reset the phone? I'm not sure how to get the phone to recognize an update now.
Click to expand...
Click to collapse
Did you use Odin to flash back to stock?

malek777 said:
Did you use Odin to flash back to stock?
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Click to collapse
I used the Emergency Recovery function of Smart Switch which, from my understanding, is basically the same thing. I know how to use ODIN but it seemed a better idea to go with the official solution. Guess I'll find out if it worked once the June update is available in Canada.

Downgrading intalling PG1 or previous update over PK1 latest security policy update

I have Galaxy S7 T-Mobile G930T (ROOTED) with latest PK1 update. Before updating to PK1 battery was lasting to 2-3 days and phone was cold all time. But, after PK1 update phone battery become lasting to only 1 day and phone sometimes getting hot by itselft. Any ideas to solve this problem? Please help me to install PG1 firmware over PK1. Phone is ROOTed.

try installing pk1 over your driver that you have right now, because i've had an issue where the security policy updated and i was stuck in a bootloop and i wanted to backup my msgs so i tried lots of things and what worked for me was to flash the ap file for pk1 with prince odin's and it just dirty flashed it, but im assuming it downgraded the policy and enabled me to boot back into my phone with no issues, but it did break my root. best of luck.
edit: try making a backup first you dont want it messing up and causing it to loose all your data

need a general understanding of what "wipe/data factory reset" does...

My S6 (SM-G920V) phone was rooted until July of 2016. I had to send the phone into a Samsung repair center because the battery was swelling and they would replace it. When I got the phone back they had upgraded the firmware to the current version at that time, thus decimating my root. Oh well.
Since then my phone never updates with a newer version firmware. I suspect it is because when I was rooted I renamed the files that are responsible for checking for an update and performing the update.
In fact if I try to manually update the phone, I get a 'settings has stopped' type message.
My thinking (correct me if I'm wrong) is that when Samsung updated my phone those parts of the system I changed are still changed, like auto updates that I essentially killed.
I went into a Best Buy yesterday and the Samsung person there manually updated my phone to the now current firmware.
If this is true and since I can no longer go back to root, is there a way I can really wipe the phone, I mean totally wipe it and re-load the current firmware? I don't think the factory reset actually does that and I've seen varying opinions on this. Does anyone have any direct knowledge of this ?

[G930FD] Seeking help for battery drain in Oreo. Many thanks

Phone: G930FD
ROM: G930FOZS5ESG5
Maybe this question is asked by many guys here. I follow their instructions to reboot, re-flash via odin and factory reset for the phone. Nothing improvement.
I see the update for the ROM for ESL9 in Jan 2020. However, root is must for my daily use so I worry for the lost of my root after upgrade and the process is irreversible since the BL will be upgraded.
The android system battery drain is 30% for 8 hours during my sleep. The phone is also hotter in normal use (chat and web browsing only, no Youtube or video watching) when compare the ROM in android 7.
Any helps? I still dont want to buy a new phone as Samsung really want us to buy !
It never happens in android 7.
Great thanks.