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How To: Reset your Samsung after a Firmware Update

by MI5 on ‎14-12-2013 00:06 - last edited on ‎21-05-2018 14:56 by (41,805 Views)

If your Samsung device displays strange behaviour after a firmware update, DON'T PANIC !

There is nothing wrong with your phone.

 

What's happened is that some of the old system files have become corrupted by the new system files and you need to "reset" the phone to clear the conflicts.

 

This process will delete everything from your phone (except anything on your sim card or external SD card) and will reset the operating system so your phone runs smoothly again.

 

You will still be on the latest updates (the one you just downloaded) as you cannot roll back this way.

 

First you need to back up your data, unless you're not worried about losing it.

For older Samsung devices; Feature phone, Smart Phone/Tablet before Galaxy Note III (including Galaxy S4, Note II, etc) you need to download Kies to your PC or laptop Kies and carry out a full back up. Instructions are on the link.

 

For newer devices, Smart Phone/Tablet from Galaxy Note III (Android OS 4.3 or higher) you need Samsung Smartswitch. We have a seperate guide for that here Smartswitch

 

After this, go into Settings >back up & restore and make sure the options to back up & restore device are ticked.

 

Next, make sure you are connected to wifi and reboot the phone, wait 5 mins before turning off again (this allows the phone to back up apps to Google servers).

 

With phone off, hold Vol Up + Home + Power all together until the phone boots up, then let go. (For Galaxy S8 and S9 hold the Volume up, Bixby, and Power buttons at the same time, and keep them held down until you see the Samsung logo).

 

You will now be in the bootloader menu.

 

Use vol down to select the option to reset all user data (or similar words) and when highlighted, press the power key.

 

Wait for menu to appear again and then press the power key when "reboot" is highlighted.
Phone will now restart and prompt you to re-enter your google account and set up some of the defaults on the phone.

 

Once it fully boots up your apps will automatically download again to the phone.
After all the apps have downloaded, reconnect to Kies and restore the backup you made earlier.

 

Simples !! Smiley Happy

Comments
by perksie
on ‎14-12-2013 00:31

@MI5 wrote:

If your Samsung device displays strange behaviour after a firmware update, DON'T PANIC !


Aaaww, come on, just a little panic please! :-)

by jonsie
on ‎14-12-2013 00:38

@perksie wrote:

@MI5 wrote:

If your Samsung device displays strange behaviour after a firmware update, DON'T PANIC !


Aaaww, come on, just a little panic please! :-)


I did...a little!wink.gif

by perksie
on ‎14-12-2013 01:15

@jonsie wrote:



I did...a little!wink.gif


I know, you didn't seem ecstatic about it.

by Anonymous
on ‎14-12-2013 06:16
A 'little' Panic keeps us in a job !
by Anonymous
on ‎04-01-2014 23:47

Thanks for the reply.

 

Well done everything to the point of re-booting after reset/wipe and phone won't even turn on now, just keeps rebooting and switching off!!

 

Smiley Frustrated

by MI5
on ‎04-01-2014 23:49
Start over and do it again.
Pull battery to stop the looping.
by Anonymous
on ‎22-01-2014 18:09

Sorry it didn't work. Still the same won't connect to network

by MI5
on ‎22-01-2014 18:15
by Anonymous
on ‎24-01-2014 16:26

My options when I do the reboot thing are:

reboot system now

apply update from ADB

apply update from external storage

wipe data/factory reset

wipe cache partition

apply update from cache

 

I did the "wipe data/factory reset" and then reboot.

 

However, I'm still stuck at the SAMSUNG splash screen... Smiley Sad Smiley Sad Smiley Sad Smiley Sad Smiley Sad

by MI5
‎24-01-2014 16:35 - edited ‎24-01-2014 16:36

Try the reset a couple of times, but if still no good you can try a reflash http://community.o2.co.uk/t5/Android-Devices-Samsung-HTC-Sony/HOW-TO-A-Guide-to-using-Odin/m-p/46346...
If that still fails it's back to Samsung, I'm afraid....

Note, it can take 10/15 mins to restart after a reset.

by Anonymous
on ‎24-01-2014 17:26

I'm just downloading the firmware now from Sammobile...  Keeping everything crossed.  Was so excited this morning when I had the 4.3 update.  I'm now wishing I hadn't bothered.

by MI5
on ‎24-01-2014 17:32
You'll be fine Smiley Wink
by Anonymous
on ‎24-01-2014 17:47

I really, really hope so!  The download from sammobile is taking a while.  I'm getting so despondant whilst it's doing it!  But I really appreciate you taking the time to point me in the right directions for things.  Thank you

by MI5
on ‎24-01-2014 17:49
Well, if it helps, I got my fingers crossed for you Smiley Happy
by Anonymous
on ‎24-01-2014 19:05

It's letting me do stuff!  It's connecting to Google to restore my account at the minute!  Phew!

by MI5
on ‎24-01-2014 19:07
Success, YAY !! Smiley Happy
by Anonymous
on ‎24-01-2014 20:16

Hmm... It's now saying "Not registered on network" when I try to use it as a phone...

by Anonymous
on ‎24-01-2014 20:28
Go to:

Settings
More Networks
Mobile Networks
Choose a network operator
Search Network

Assuming o2 comes up in the search click on it and it should register you on the network.
by Anonymous
on ‎24-01-2014 20:33

It is there, but... it momemtarilty flashes "Registering on O2 - UK", then says "Unable to connect. Try later"

Then I get a warning triangle notification "No service. Selected network (O2 - UK) unavailable"

by MI5
on ‎24-01-2014 20:34

@Anonymous wrote:

Hmm... It's now saying "Not registered on network" when I try to use it as a phone...


Did you flash the correct firmware, ie if you were O2 branded before you have to flash the O2 firmware ?

by Anonymous
on ‎24-01-2014 20:34
Please go to http://status.o2.co.uk and enter your postcode to see if your local network is working or if there is a fault on the mast
by Anonymous
on ‎24-01-2014 20:36
Failing that and this might sound silly but please forgive me but has the sim card been inserted correctly?

Try taking it out again and cleaning the sim then put it back in.

by Anonymous
on ‎24-01-2014 20:57

I was O2.  I flashed O2.  The network status says my postcode is fine

by Anonymous
on ‎24-01-2014 20:58

Sim's fine.  Took out and reinserted to make sure

by Anonymous
on ‎24-01-2014 21:00
Mmmm 0k. Do you have another phone you can test the sim in? Could the sim be faulty?

by Anonymous
on ‎24-01-2014 21:00

Sorry. I'm thoroughly despondent at the mo and regretting the OTA this morning.  I had a great phone until 08.00 this morning.  I do appreciate people taking the time to try and help me with my brick

by MI5
on ‎24-01-2014 21:00
Check your IMEI number is still correct.
by Anonymous
on ‎24-01-2014 21:02
There is no need to apologise. We know how frustrating it can be and emphasise with you.

Between us we will try to get you sorted if we can! !!!
by Anonymous
on ‎24-01-2014 21:07

IMEI is completely different Smiley Sad

by Anonymous
on ‎24-01-2014 21:10
@MI5 this one is for you. Over my head now
by anticpated
‎24-01-2014 21:35 - edited ‎24-01-2014 21:55

I think the answer lies within. 

 

Firstly unless there is a reason why you can't change the firmware such as a network or SIM lock. There should be no restriction. ODIN can factory reset a phone although why you have a different IMEI is a lttle weird.

 

Dial *#06# to get your IMEI. 

 

http://forum.xda-developers.com/showthread.php?t=2098642

 

*2767*3855# will perform a full factory reset and reset the device to the factory default. If you really have a malfunctioning device.

 

Can you access files via the USB data cable and if so, back up what you can onto your PC/Mac.

 

In the link above, it should have a code which tells you how to check the lock status. Unlocking is free for people on contracts.

 

If your question doesn't get answered by the time this post appears. Give that info a try. 

by Anonymous
on ‎24-01-2014 21:51

Thanks everyone.  Found another site that mentioned restoring IMEI's via Odin.  It worked a treat.  

 

Happier, more relaxed now!  It's back to being a phone rather than a paperweight!

by Anonymous
on ‎24-01-2014 21:53
That is brilliant news. Well done and really pleased for you.

Hope you found the community welcoming and helpful.
by Anonymous
on ‎24-01-2014 22:03

Definitely!  Had I not started on the Odin flashing route, I'd still have a paperweight!  My only remaining question is, how can I now update to 4.3?!!!

by Anonymous
on ‎24-01-2014 22:08
Glad you have a working phone again Smiley Happy
by MI5
on ‎24-01-2014 22:14
Yep modem screwed up as I thought hence IMEI check. Well done for finding itSmiley Happy
by Anonymous
on ‎24-01-2014 22:42

It was a great shout.  I'd presumed IMEIs were fixed and would have never thought to check it.  So, will I be able to do a standard OTA update to get 4.3?  I'm now back on 4.1.2...

by Anonymous
on ‎24-01-2014 22:46

Yes, you should be able to the update Smiley Happy

by Anonymous
on ‎24-01-2014 22:47
Yes should work ota as normal now
by Anonymous
on ‎24-01-2014 23:20
Are you brave enough lol after today? 😎
by MI5
on ‎24-01-2014 23:23
4.3 is on Sammobile now.
Type i9505o2u into the search box and flash with Odin http://www.sammobile.com/firmwares/
by anticpated
on ‎24-01-2014 23:24

So are all versions of this update using a bad modem driver or is it just the O2 one?

by Anonymous
on ‎24-01-2014 23:24
Go on I dare you Smiley Wink
by MI5
‎24-01-2014 23:25 - edited ‎24-01-2014 23:25

This is the second or third one we've had on here - Not seen it on any other forums, so I'll let you draw your own conclusions.
Of course the extensive O2 testing will have picked it up so it can't be a real fault Smiley Wink

by Anonymous
on ‎25-01-2014 08:33
I was about say that it won't let me do an OTA update, but if Sammobile now have it, I'll mooch on over and flash it! Thanks!
by Anonymous
on ‎25-01-2014 08:51

When I type in i9505o2u into Sammobile, it tells me to use Kies to update.  Kies now doesn't seem to like my phone Smiley Sad

by Anonymous
on ‎25-01-2014 09:58

Hi

 

What do you mean by Kies doesn't like your phone?

 

Do you mean it won't connect or recognize your phone?

by Anonymous
on ‎25-01-2014 10:08
That's exactly what I mean
by MI5
on ‎25-01-2014 10:14
Just download the 4.3 firmware?
by davidle
on ‎26-01-2014 19:09

I have seen this advice but it requires you to be connected to the wifi network to carry it out. The issue is that the phone does not connect to the wifi network - hence the message "network disabled because internet connection is slow" So what do you do then?