Hello ive been searching the internet on how to upgrade the international S3 from 4.1.2 to 4.3 and ive found this thread http://forum.xda-developers.com/showthread.php?t=1835931
I noticed some guys saying something about backing up the EFS and stuff like this, which i don't understand :S (i will appreciate it if someone can explain it to me)
Anyways im running 4.1.2 I9300XXEMG4 and JZO54K.I9300XXEMG4 and i still didnt got an update for 4.2.2 or 4.3 ;/ i bought the phone from cyprus .
How can i safely upgrade it to 4.3 ?
PS: I've rooted it in the past and flashed custom roms but now i flashed a stock rom, i just dont need root or anything i want Stock Official roms without flash counter if possible.
Thanks :highfive:
bump?
http://forum.xda-developers.com/showthread.php?t=1646610
Here you can download 4.3.
http://forum.xda-developers.com/showthread.php?t=2344125
Answers to all posible questions you can have (Roll op sticky thread)
Hello Guys
Well, let me get straight to the point. After my old rom (Revolution HD3) was draining my battery pretty fast, i decided to update to 4.4.2. Well, i downloaded the latest 4.4.2 for switzerland from sammobile.com. I flashed it and it somehow was all laggy and i had fc's the whole time. After some time i was able to use the phone anyway, but it was laggy. And the problem was that my 3G connection was EXTREMELY slow. I got connection time outs the whole time and wasnt able to download anything. Well, i thought it was the rom i flashed trough odin, so i downgraded to 4.2.2, my original rom, and updated trough KIES. The rom wasnt laggy anymore, but the 3g/4g was slow. I tried different Modems and Kernels. Nothing Helped. I then decided im going back to a custom rom but the flash failed. Then i tried another rom and it failed again. So i thought it may was cause i was on 4.4.2 and tried to flash a custom rom that was 4.2.2. I then tried to reflash my stock rom trough odin, and it FAILED. And that's how i bricked my phone. I can still enter Download Mode, but can't enter the recovery anymore. What do i do? I'd like to solve both problems.
Thanks guys
Btw: I've got an I9505
I assume you didn't wipe anything before you flashed stuff? Thats like rule number 1 to do.
You can try flashing a recovery true Odin.
Hej Guys
Um.. Just to let you guys know, it is possible to downgrad to 4.2.2 from 4.4.2. I just did it this morning and had sucess. But the problem with the really slow internet connction still is here, when im on a 4.4.2. And, it is the same with custom roms running 4.4.2. I tried different kernels and modems, nothing helped so far. As soon as i was back to 4.2.2 it had the usual connection speed. I called my provider and also called samsung itself. Obviously, they both told me to bring the phone back for garantuee. But well, as i know it's a software problem and not hardware, i wont do that. So can you guys help me? What should i do next? Actually im back on 4.2.2. Thanks
Edit: Oh, and ofc, i did everything like wiping/factory resetting, wipping preoload etc. It's not my first time flashing.
It's not possible to downgrade from 4.4.2 to 4.2.2! End of..
Sent from my GT-I9505 using xda premium
Are you serious dude? Im running 4.2.2 right now. What is your point?`I didnt even ask about it. I asked about a solution to the problem that i get slow 3G/4G on my I9505 when running 4.4.2. If you want a proof Pic about it running 4.2.2, i can give you one. But i dont really get what your point is.
Hang on hang on hang on, it is common knowledge that you cannot downgrade from official samsung 4.4.2 to official samsung 4.2.2 because in odin you will get failure at aboot.bin because you cannot downgrade bootloader.
How ever what would be really good is instead of just trying to say it then jumping out saying what's your point, we'll my friend the point is, it would be advantageous to everyone in the entire samsung galaxy s4 i9505 community if you can tell everyone how you did it.
My perspective is your doing a bit of flaming.
Pictures really won't prove a whole lot as anyone can do some build.prop edits and show different rom name and version.
Sent from my GT-I9505 using Tapatalk
Well, if it sounded like flame to you, it wasnt. I didnt create this thread to flame others. But i wasnt kidding saying that i downgraded to 4.2.2. Here how i did it:
Was running 4.4.2 (I9505XXUFNB9)
Flashed TWRP recovery.
Flashed custom Rom 4.2.2, which FAILED!
Flashed Official 4.2.2 trough odin, which FAILED!
Flashed TWRP recovery again, since it was somehow damaged from the flash before
Flashed Wanamlite 4.4.2
Flashed Custom Rom 4.2.2
Flashed Official 4.2.2 with succes.
Im not sure what part of those flashes were essential, but i have no reason for liying to you. What would be the perks if i did?
But now again BTT, Did anyone else have that problem of slow interenet connection? Or is it just me? Maybe some ideas?
Regarding slow Internet maybe it's your carrier with issues.
Maybe the downgrade back to 4.2.2 has created issues in its self. Have you checked your baseband matches bootloader and build?
A problem we have is we can't see the version of the 4G modem (non-hols) so that might be also an issue.
When you flashed back did you do a factory reset?
In regards to downgrade do you still have the Knox bootloader?
Sent from my GT-I9505 using Tapatalk
Well, i called my operator and the girl on the phone said that some people already called with the same issue, but its not on their side. It's a problem with the update samsung released. After the downgrade i had my Knox Bootloader and everything worked like it always did.
Yesterday Sammobile released a new ''rom'' for my country. Downloaded it, flashed it and it works great now. I have a bit of a fast battery Drain, but the problem with the slow internet seems to be fixed.
Again: 4.2.2 worked perfectly after downgrade. It had no issue, No FC nothing at all. Maybe i was lucky? No idea, but im happy my 4.4.2 works now
Thanks anyway for your help guys
Edit: Yeah, my bootloader matched both baseband and build.
Joku1981 said:
Mod Edit
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Click to collapse
If you had done your homework, you would know that in almost all cases Samsung repairs it even with Knox set to 0x1. They even publicly stated it in the Netherlands that they will repair your phone even with custom roms.
And you don't know the law in Switserland. Nor do I. So you can't say that in Switserland his rights are voided by flashing.
If Samsung doesn't give you the warranty, then you still have your consumer rights in the European Union (not that Switerland is in it). No flashing, modding or other chances decleine you your rights if it's not related to a hardware failure. In the countries that you and I live in, it will never void your rights if the damage is not related to flashing or modding.
So well, i think that in switzerland they actually WONT repair it if you flash it, but i aint sure about that, since i never had to send it to repair. But anyway, it was only a software problem on their side. They released another version for switzerland and it seemed to have fixed the problem. I have a bit more of a battery drain, but i actually think im just too used to some other custom roms. Anyways, thanks for the help guys
Hi everyone,
I have a question... I took the NC5 OTA update not knowing it would lock up the device, in fact the first time I turned it on it was the only option to upgrade or delay it. So I've completed gogolies OTA downgrade to rooted upgrade (NC5) and it worked! every happy about that. However I really want something pure AOSP. Can I downgrade again to an older version in order to load something like AKOP or Cyanogenmod? I looked around for 4.4.2 roms and was unable to find anything pure... when I say pure I mean the AOSP images, icons, software nothing designed by Samsung.
Thank you,
Ck
Why do you need to downgrade? You can just flash any custom rom you want.
There are a lot of AOSP roms. You can find them in the Original Development section.
Thank you for the reply however I've tried to install AOKP and CM10 both on slot one and both failed (booted to black screens) and I don't see any I545 roms on this site. Could you point me in the correct direction? I'm currently running rooted 4.4.2 NC5 on i545
Thank you again,
Ck
theWebDeveloper said:
Thank you for the reply however I've tried to install AOKP and CM10 both on slot one and both failed (booted to black screens) and I don't see any I545 roms on this site. Could you point me in the correct direction? I'm currently running rooted 4.4.2 NC5 on i545
Thank you again,
Ck
Click to expand...
Click to collapse
Hi,
Please check for your specific device forum .
http://forum.xda-developers.com/galaxy-s4-verizon
If you flashed a ROM from the threads on this forum it's very likely it didn't work because the international S4 is different from Verizon one .
~Lord
Hi im a bit of a noob when it comes too this flashing business but i managed to update my i9505 to lollipop using odin and the official stock rom but the problem i have now is my network signal is now terrible where it was good before is ther anyway that a noob like me can fix this issue? Im in uk on giffgaff (o2)
i have never rooted my s4 before and if some one has a noob guide for rooting from lollipop so i can custom rom it up i might give that a look too, I wouldnt mind a nice slim custom rom with a few extra tweeks and without all the google and samsung rubbish that comes standard..
Thanks
P.s sorry for all the questions and sorry if this is in the wrong section
The signal problem is probably caused by the modem.
You have to flash the latest modem for your phone, country and carrier.
If you already are on the latest modem then a lollipop modem might help.
Here you can find a guide on how to root lollipop.
If you want a slim rom you better try CM12 or GPE. If you like touchwiz then look for a touchwiz based lollipop rom around the forum.
clizzle said:
Hi im a bit of a noob when it comes too this flashing business but i managed to update my i9505 to lollipop using odin and the official stock rom but the problem i have now is my network signal is now terrible where it was good before is ther anyway that a noob like me can fix this issue? Im in uk on giffgaff (o2)
i have never rooted my s4 before and if some one has a noob guide for rooting from lollipop so i can custom rom it up i might give that a look too, I wouldnt mind a nice slim custom rom with a few extra tweeks and without all the google and samsung rubbish that comes standard..
Thanks
P.s sorry for all the questions and sorry if this is in the wrong section
Click to expand...
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Is your phone branded or unlocked? Coz this is very important. UK(O2) still without lollipop update. This is the possible reason that you are receiving weak network signal.
Joku1981 said:
Is your phone branded or unlocked? Coz this is very important. UK(O2) still without lollipop update. This is the possible reason that you are receiving weak network signal.
Click to expand...
Click to collapse
sorry for late reply... its unbranded unlocked version
i will try and look for the latest modem and give that a try tonight.... Think i might root and put a custom rom on in the end anyway as there is some minor bugs on the lollipop rom that its annoying me
Thanks for the help guys i will let you know how i get on
so im gonna flash this XXUHOB8 + Fix WIFI hopefully it might help as i was on XXUHOB7 before?
clizzle said:
so im gonna flash this XXUHOB8 + Fix WIFI hopefully it might help as i was on XXUHOB7 before?
Click to expand...
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Install this APP (cover serial number and IMEI) and add some screenshots for avoid problems.
sorry it wont let me upload as i dont have more than 10 posts what do you need to know and il tell you what it says
I'm also experiencing someone what of the same problem I've rooted/Un rooted a couple times, I'm back at a stock version and it seems to be ok.
Hello Xda Members
I have i9505 i have flash lot of roms on it
Every werk i change from rom to rom
But the problem is when i downgrade to jellybean 4.2.2 Xperia Rom the touch screen is not working( i plug otg mouse it's work fine) ( btw when i lock the phone and unlock it it's work for 5 second)
And if i upgrade to 4.3 or 4.4 or lolipop 5.0 the screen back to normal work fine
The issue is only on 4.2.2 jelly bean
is there a solution
Thanks
greeting from morocco
Sorry for my language
Yes. Stop trying to downgrade to Android 4.2.2. Especially if you've upgraded to stock 5.0.1 at any point in the past.
Strephon Alkhalikoi said:
Yes. Stop trying to downgrade to Android 4.2.2. Especially if you've upgraded to stock 5.0.1 at any point in the past.
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Yes i know that , but i haven't find any xperia rom for i9505 based on TW unless this one on TW 4.2 JELLYbean
I can't help you there. But if you want an up-to-date Xperia ROM you're going to have to build it. You clearly cannot use the one you found.