[Q] Upgrading from 4.2.2 to custom 4.3/4.4

xDC23

Senior Member
Nov 22, 2010
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El Paso, Texas
Ok guys, new to this phone, just came from an xperia z. I've been doing some reading and i'm a little bit lost.
So far I have my phone on 4.2.2, never been updated, and i have it rooted and running clockworkmod as a recovery.
I have a few questions before I do anything, i've been reading about KNOX and i'm a bit confused. Does KNOX come back when you update to a different rom? When I fired up SuperSU for the first time it asked me if I wanted to disable KNOX features, and it did so successfully. My question is, is there anything to look out for before updating?
 

Yo_2T

Senior Member
Apr 20, 2012
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Arlington
Ok guys, new to this phone, just came from an xperia z. I've been doing some reading and i'm a little bit lost.
So far I have my phone on 4.2.2, never been updated, and i have it rooted and running clockworkmod as a recovery.
I have a few questions before I do anything, i've been reading about KNOX and i'm a bit confused. Does KNOX come back when you update to a different rom? When I fired up SuperSU for the first time it asked me if I wanted to disable KNOX features, and it did so successfully. My question is, is there anything to look out for before updating?
If you update via OTA, your bootloader will come with a KNOX counter, which cannot be reset at the moment. If you flash anything when you have that, it will trip the counter and your warranty is voided.
I'd suggest flashing a 4.3 or 4.4 rom if you wanna update it, then flash the MK2 modem to get normal signal.

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Android_Monsters

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Feb 2, 2012
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You get Knox if you take the official 4.3 update.

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---------- Post added at 05:02 AM ---------- Previous post was at 05:01 AM ----------

Or flash the 4.3 boot loader.

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xDC23

Senior Member
Nov 22, 2010
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El Paso, Texas
I'd have a look at this thread: http://forum.xda-developers.com/showthread.php?t=2546024

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This is what I did, however: http://forum.xda-developers.com/showthread.php?t=2544612

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I had actually seen this, but I wasnt sure.
Ok i see you went the ODIN route on this. I see that there's data drops and idk what else in the warnings.....any problems there?

If you update via OTA, your bootloader will come with a KNOX counter, which cannot be reset at the moment. If you flash anything when you have that, it will trip the counter and your warranty is voided.
I'd suggest flashing a 4.3 or 4.4 rom if you wanna update it, then flash the MK2 modem to get normal signal.

Sent from my GT-I9505G using Tapatalk
Ok, I do not care about any warranty, I take care of my electronics. Not trying to be rude, but i wanted to clear that up. I know warranty is out the window at this point.
So I can update to just about any rom, but i would have to flash the MK2 modem right after to fix signal problems?
Sorry for so many questions, but i guess I am a bit late getting into the S4 game.
 

Yo_2T

Senior Member
Apr 20, 2012
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Arlington
Yes, that's right. Beware of potential issues though, some people have reported the modem didn't stick when they flashed it. It went fine for me and most people, but I just wanna give you a heads up.
And somehow flashing rom with Odin always causes issues for me. TWRW is the best!

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xDC23

Senior Member
Nov 22, 2010
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El Paso, Texas
Yes, that's right. Beware of potential issues though, some people have reported the modem didn't stick when they flashed it. It went fine for me and most people, but I just wanna give you a heads up.
And somehow flashing rom with Odin always causes issues for me. TWRW is the best!

Sent from my GT-I9505G using Tapatalk
I'm not planning on flashing roms through ODIN, just the modem.
So if i flash this now, its SUPPOSED to stick onto the phone even if i fluctuate through different roms?
Also, if i install a rom that says knox-free i would be able to flash it no problem right?
 

xDC23

Senior Member
Nov 22, 2010
209
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El Paso, Texas
Yes. You only need to flash the modem once. All the custom roms on here are KNOX free, so no worries there.

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Great. Thank you for the help! I just flashed the modem and its showing mk2 in the baseband version, so i guess it went through. It had the 4.2.2 bootloader, not the 4.3.
So just to clarify, now that it has this installed I'm free to install any custom rom I want?
 

Yo_2T

Senior Member
Apr 20, 2012
243
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Arlington
Great. Thank you for the help! I just flashed the modem and its showing mk2 in the baseband version, so i guess it went through. It had the 4.2.2 bootloader, not the 4.3.
So just to clarify, now that it has this installed I'm free to install any custom rom I want?
Yes. Enjoy your S4 :)

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HampTheToker

Senior Member
May 6, 2010
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I take care of my S4 too, and I still avoid Knox like the plague. I'm sure the next person to own this phone will appreciate it.

Anyway, you might consider installing Mobile Odin from the Play Store. I've flashed a couple roms that caused my baseband to show as unknown and using MO to reflash the MK2 modem was insanely more convenient than using Odin on my PC.