Downgrading to Android 4.4?

I am very upset with low battery life. It holds the charge ok while I am not doing anything, but overheats when I use the internet, GPS or camera. Power loss is about 20% per hour, which is unacceptable. I am shocked how come they can even bring such products to the market.
I recall that power consumption significanlty increased when I upgraded Sony Xperia Z1 from Android 4.4 to 5.
I have a rooted LG G4.
I want to install android 4.4 on it. Is it possible to install standard version of Android 4.4 or the phone will stop working?

IMEI unknown after downgrading ROM

My phone was stuck in a bootloop with 5.1.1 (stock) installed. I have since flashed all the versions backwards until 4.2.2, which finally worked! Horray! However, my IMEI number is now lost :(

IMEI: Unkown
IMEI SV: Unknown

Any ideas on how to get them back? I've been searching around and found some solutions for other devices (http://forum.xda-developers.com/show....php?t=2180459) but does anyone know how to fix this problem with a Nexus 4?

I'm currently running cm-10.1.3.1-signed which is Cyanogenmod's equivalent of 4.2.2

Downgrading Note Pro 12.2 Verizon from 5.1.1 to 4.4.2?

HI,

I've updated the Verizon version of the Galaxy Note Pro 12.2 and I really don't like it. There's too many instability issues that I haven't seen before! I rely heavily on the S-Note and it keeps crashing on me after a few minutes when it is opened up. I can write for a bit but then it just stops working and brings me back to the home screen. The other problem is the SD Card. I never had an issue with it before, but I am now! Sometimes it goes missing when I go into a file manager looking for a document. And it occasionally freezes up!

I never had this problem before with KitKat 4.4.2, and I want it back!

Now I've tried using ODIN 3.10.7, 3.07, and 3.09, but I can't get it to connect. It keeps saying "added!! removed!!" when I try to use Home-Volume Down-Power" to reboot in Odin mode.

So does anyone have any suggestions on how I can downgrade?

Downgrading from B817 to B621?

I wanted to rollback to B621 after updating to B817, because of so many bugs and general unstability.
But I wanted to be sure to not do a mistake, since some people said the rollback B800 package isn't working properly...
Did someone managed to rollback to B621 without problem?
Thanks guys :o

Softbricked While Downgrading

<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> ALL_VZW_G900VVRU1BOC4_G900VVZW1BOC4_CL3846539_QB43 92815_REV00_user_low_ship_MULTI_CERT.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/003> Odin v.3 engine (ID:3)..
<ID:0/003> File analysis..
<ID:0/003> SetupConnection..
<ID:0/003> Initialzation..
<ID:0/003> Set PIT file..
<ID:0/003> DO NOT TURN OFF TARGET!!
<ID:0/003> Get PIT for mapping..
<ID:0/003> Firmware update start..
<ID:0/003> SingleDownload.
<ID:0/003> aboot.mbn
<ID:0/003> NAND Write Start!!
<ID:0/003> FAIL! (Auth)
<ID:0/003>
<ID:0/003> Complete(Write) operation failed.
<OSM> All threads completed. (succeed 0 / failed 1)
I was trying to root the s5 by downgrading but ran into a slight problem. Everytime I start the phone it boots for 5 mins, then goes into stock recovery. I have tried multiple different stock roms and none seem to work. Any help would be awesome.

Help downgrading from TWRP 2.8.5 to 2.8.0.1

Mac Os X - adb tool and fastboot installed.
Xperia S lt26i

I had the 4.1.x Android version, and I wish to install the Lollipop 5.1.1 version.
For doing that I need to install a ROM.
To install a ROM It may be usefull to have a recovery tool.
I'm using TWRP 2.8.5.0 as a recovery tool.

Problem:
Each time I try to install the ROM uCyan-12.1-b05.zip or simpleAOSP.zip, I get the same error:
It hangs on

Quote:

"detected filesystem ext4 for /dev/block/mmcb1k0p12"

, and, after a while, I get:

Quote:

" ... Operation not supported on transport endpoint set_metadata_recursive: some changes failed ..."

After some research I found out that, this error may be related with this warning message that TWRP provides:
" Kernel does not have support for reading SELinux contexts"

After some other research, I found out that, in order to avoid the error, I should use a OLDER version of TWRP, for example: 2.8.0.1.

If this is true, and if this is my only way around, I don't know how to downgrade to the older version.

I tried:

Code:

---

"adb reboot bootloader"

---

But the device simply restarts, and get's loaded into TWRP again.
No blue light, nothing.
Without being able to enter on the bootloader mode, I don't know how can I re-install the older version of TWRP necessary to install Lollipop 5.1.1. as desired.

Can anyone please help me out.
I'm stuck.

:(

Unroot D950 AT&T without downgrading

My D950 came stock with 4.4.2, so I do not want to downgrade. Can someone please help me with unrooting the phone? This last update has almost made my phone unusable, because it keeps trying to force the fota. Since I no longer need it rooted, I would just as soon unroot the damn thing and go back to my stock 4.4.2. Any help will be greatly appreciated.

Updater has stopped after downgrading to B137 from B143

So I was trying to test the beta Lollipop on my MT7-L09 and I used the Update OTA to install B137, so that I can install B308 and B317, respectively.
Now everytime I try to open Updater, it crashes with the toast: Updater has stopped.
Has anyone encountered it / how did you fix this issue? Google didn't seem to be very helpful on this topic.

Downgrading

I have had my phone g900a, rooted since 4.4.2. My current OC4 is also rooted using FlashFire. I read that if the phone was already bought with the current system, it can't be downloaded, but mine wasn't. How do I go about doing this? I'd rather go back to original stock and upgrade keeping it unrooted.
If you can, please share the thread that shows me how.