Help with flashing TWRP and Custom kernel for first time - Samsung Galaxy S7 Questions and Answers

Hello! I just bought my new s7 exynos model a few days ago. But i noticed that the battery life is horrible. I start uaing my phone at 9 am and on 3-4 pm my battery dies. I have to charge it again to continue my day. So i would like to flash twrp and get a custom kernel like notorious kernel for better standby time of my s7. I would like clear and simple instruction as it is my first time dealing with a flagship phone.
I have past experience with flashing and im a no newbie to it. But since reading a few posts about s7, i think i need a proper guide to do the flashing.
If possible also tell instruction for installing superman rom. And over top of it, notorious kernel.
Thanks!

Related

How long do you wait before rooting -- Making sure phone is solid first?

I'm curious if anyone else waits a bit before rooting. Just in case the phone breaks early on and needs to be sent back.
I'm thinking maybe wait 1-2 months?
Am I paranoid, or does everyone else do this too?
.jond said:
I'm curious if anyone else waits a bit before rooting. Just in case the phone breaks early on and needs to be sent back.
I'm thinking maybe wait 1-2 months?
Am I paranoid, or does everyone else do this too?
Click to expand...
Click to collapse
Personally I don't worry about that. I DO wait to give myself time to familiarize myself with how the phone functions and such before rooting so that I know when there is a problem, rather than second guessing.
It is also hard to tell if a Rom/kernel is running better when you have no base line to compare it to.
I rooted my phone almost immediately. I don't like using custom ROMs but I do like using apps and tweaks that require root.
Sent from my Nexus 5 using xda app-developers app
1-2 months??? I didn't even make it 1-2 hours. My phone was unlocked and rooted within 30 minutes of delivery.
I unlocked, installed TWRP, and rooted within 20 minutes of UPS delivering it.
I used to root and start flashing almost immediately. But as the years have passed and I've become more reliant on my phone for work and such, I've started pulling back a bit. I've reached a point where I just get too frustrated with even the slightest bugs so now I immediately unlock the bootloader (to prevent having to do a full factory restore later) and just use the phone as is until a fully stable ROM comes around that I feel comfortable flashing without losing any functionality at all.
This time around I'll probably stay stock with Nova Launcher (once the new 4.4 version is finalized) for another couple months. Time will tell though, I suppose.
.jond said:
I'm curious if anyone else waits a bit before rooting. Just in case the phone breaks early on and needs to be sent back.
I'm thinking maybe wait 1-2 months?
Am I paranoid, or does everyone else do this too?
Click to expand...
Click to collapse
Seeing as I have a Nexus device, with factory images provided directly from Google that will return my phone completely back to stock (except lock the bootloader), I usually don't hesitate to root or flash custom ROMs. The only reasons I haven't unlocked my bootloader yet is because CWM isn't completely stable yet (I don't like TWRP for some reason), and because my brother is debating on a Nexus 5 for his new phone, and I wanted to show him complete stock because he won't be a tinkerer. He'll be using the unmodded, unrooted bare stock image.
I rooted it out of the box yesterday.
Waiting myself. Want to get a feel for this device as is. Maybe later I will root/flash. But for now I am happy as is. No rush.
The important thing is you learn about the phone and how to root it and potential issues before you do it. I'm still waiting for my phone but the first thing I'm going to do is put a custom recovery on and make a nandroid. Then I'll root it as I have apps I like to use that require root. I'm not worried about warranty issues as it's pretty straight forward to put the factory image back on it and relock it.
Also, remember that when you unlock it you'll lose all your data and apps. And you'll need to unlock it to root it.
I booted, took the ota, unlocked the bootloader, installed TWRP and Super SU as soon as the phone was in my grimy hands.
Rooted immediately after taking out of the box .. no point waiting...
I unlocked and rooted before activating. Not really planning on flashing any ROMs, but just wanted it done in case I needed to tweak cpu to increase battery life.
Just until you familiarize with your new device.
Just successfully rooting won't affect the end results when using the stock Rom. Everything should still work the same way but with more options for the user.
I jut waited until next day, but took time to play some games, make calls/texts, web browsing and tested all features. There I learned the battery life, Net speed and stock performance. Everything was the way should be Firmware/Hardware wise:good:. Then, unlocked/rooted/ & flashed its first Rom
and here we are!
I didn't even boot it. I powered it on in download mode, fastboot oem unlocked, flashed twrp and rooted. Then booted for the first time. I only rooted for tibu and adaway. Now just waiting on aokp.
I waited 4 days only and mainly because we have no stable recoveries yet. Twrp is a joke while cwm is not official yet.
caribouxda said:
I waited 4 days only and mainly because we have no stable recoveries yet. Twrp is a joke while cwm is not official yet.
Click to expand...
Click to collapse
I'd say just the opposite, but then I like twrp
You can unroot, so....

HTC One E8 bugs

Up until about a week ago, my HTC One E8 dual sim (M8SW - China Unicom) had been working perfectly, albeit only running android 4.4.2 as unknown to me when i bought it, it had been rooted and TWRP/Super SU installed (I assume because I'm in Australia and it's a chinese phone... ebay purchase...)
I'm not entirely sure why, but the battery life is now draining literally about twice as fast, and the google play services app seems to be using up a fair amount of the battery. I've tried a few apps (google services fix etc) to try to amend the problem, and have completely reset the phone, but haven't had any luck.
Just wanted some thoughts as to whether upgrading the phone to Android MM would fix this?
I've attempted to do so, but because my phone is rooted I can't get OTA updates. the other issue I have is that I can't get a copy of the stock recovery (the link provided at http://forum.xda-developers.com/one-e8/help/htc-one-e8-mid-cid-ruu-ota-twrp-t2903210 does not work...) and I believe I need to install the stock recovery to get the OTA updates. I'm not confident enough to try and install a custom rom and I have no issue with HTC 'bloatware'...
very much a rookie, but would appreciate if anyone is able to help as the phone is great and I'd rather not fork out the money for a new one just yet...
thanks
Hi there! I also bought a M8SW and also from eBay with the ROM in bootloop mode where the previous owner attempted to put in another ROM but failed but that's another story.
Not sure what's wrong with your phone battery drain but I initially finally got stock LP on mine and the battery life was good.
When I saw the MM update, I jumped on it straightaway but struggled to get OTA working as my initial LP was rooted with xposed hence my little journey to get back to stock LP and then OTA to MM here: http://forum.xda-developers.com/one-e8/general/tedious-update-m8sw-to-marshmallow-twrp-t3346318
I would say that MM seems to maybe drain the battery faster than LP but tbh, I love the super smooth stock Sense. Only thing to watchout for is that xposed on MM is not fully working for all the modules. That was nearly too much for me but I have stayed with MM with xposed with N-ify, Amplify, XNotifications and SenseToolBox - all semi working for the bits that I need.
My battery lasts for at least 2 days before I need to charge it. My typical usage is low: WhatsApp, twitter, FireFox and occasionally Music, News Republic and VLC to watch videos.
The E8 still cuts it I think. I don't play any games on it and recently I am using so called Sense8 HTC10 ROM which is pretty good - definitely recommend it: http://forum.xda-developers.com/one-e8/development/s-team-e8-s4-20-2x-ported-htc-10-sense-t3364650
I'm pretty keen to get a stock version of MM on the phone - provided I can get this issue sorted the phone will last me another year or two at least.
By the sound of things, if I want to get the stock version of MM or LP on my phone, I'll need to convert it to the European model?? is that an easy thing to do? I assume it's just installing a different ROM??
Alternatively, if I download the ROM you provided the link to, I should be able to install this onto my phone and have MM with this different version of sense?
thanks for your help!

Really need help with possible kernel, last time tried TWRP caused bootloop :(

Hey Guys,
Long story short, I had my Sprint Note 5 rooted a while ago! due to some apps screwing me over and not allowing to use them due to being rooted I unrooted (via supersu)
Realized ever since I rooted my battery was totally crap and figured after I unroot it would help (it didn't) read about how it trips the Knox and it affects the deep sleep of the phone (thus **** battery life)
I read on here to just load a kernel in order to fix the deep sleep issue. I've rooted and loaded kernels before on other phones (no issues everrrrr).
When I looked up the TWRP version to use and flash via Odin it said successful. Phone restarted and it never came back up again. I downloaded literally all of the TWRP versions they had on their site, flashed all of them via odin and none of them would get me out of the boot loop. I got completely screwed and had to load a stock firmware from that sam site to get my phone working again. Everything was completely lost on my phone. pics that were never backed up
Due to that, I have been totally hesitant to try this again as that was the only way to fix my phone. I am willing to try again but really want to go into this prepared and have it be a smooth process ( I already backed up ALL of my files on my computer) I don't really care for TWRP or Kernels but I just want to fix the stupid deep sleep issue. I read somewhere on here that people having bootloops from twrp on note 5s was due to not being rooted first? I've also seen (as I did this almost 8 months ago) there are new TWRP versions since then, but afraid to even do those.
Is there a solution I can do to just fix the damn deep sleep issue? phone literally last 2-3 hours idle. Willing to donate via paypal to someone to help walk through it. This is a sprint variant note 5
thanks in advance

3a, issues with Android System/Kernel killing battery?

Hello! Let me know if this is the wrong place but ever since I got my 3a a few weeks ago, I've been disappointed with the battery life. The stats are below. The "Averaged per complete charge" are completely inaccurate as I've never hit > 4 SOT, ever. I don't really know what to do at this point because I've tried cleaning out everything I could.
These stats are on a regular work day, light usage. Texting, 2 or 3 calls, etc.
battery stats
Any tips?
If you're on stock, then custom kernel should help. I'm quite happy with the battery benefits that EX kernel brought to my Pixel 3a. You can find it here - https://forum.xda-developers.com/pixel-3a/development/kernel-pixel-3a-xl-elementalx-1-01-t3931185
pasha_d said:
If you're on stock, then custom kernel should help. I'm quite happy with the battery benefits that EX kernel brought to my Pixel 3a. You can find it here - https://forum.xda-developers.com/pixel-3a/development/kernel-pixel-3a-xl-elementalx-1-01-t3931185
Click to expand...
Click to collapse
Thanks. A poster elsewhere recommended a system reset and flash the newest update and release basic apps for a few days to see how the battery does.
Can I flash a custom kernel without root?
sippinhenn said:
Thanks. A poster elsewhere recommended a system reset and flash the newest update and release basic apps for a few days to see how the battery does.
Can I flash a custom kernel without root?
Click to expand...
Click to collapse
In Android 9 you can use TWRP custom recovery to flash kernel ZIP without having root. If you're on 10 you still might be able to flash it without root in fastboot (or should I say in "fastbootd"), but I didn't try that.

[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.

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