Hello
Is there a way to downgrade xxugng8 kitkat on i9505 without trigger Knox efuse to the latest stock Knox enable fw supported by towelroot v3 in order to root my device without void the warranty?
-> which is the latest stock fw/kernel supported by towelroot and is it downloadable in sammobile?
Thanks a lot for your help
Guillaume
deleted
I have a G900P from Sprint running 4.4.4. I wish I had thought about rooting before it updated from 4.4.2, since this was apparently very easy.
I have searched high and low on Google and XDA and everywhere on how to root 4.4.4 without tripping knox or how to downgrade 4.4.4 down to 4.4.2 on the G900P with no success. All posts cover other models, especially Verizon's, but I would need the 4.4.2 stock rom and kernel for Sprint's G900P to perform this method on my phone.
Does anyone know how to either:
1) Root a G900P with 4.4.4 without tripping Knox. OR
2) Downgrade a G900P down to 4.4.2 with a valid link to the Sprint 4.4.2 ROM & Kernel?
Thank you.
[HELP] NO sound & NO WIFI - S4 I9505 after flashing Stock 4.2.2 (downgrade Stock 5.0)
ISSUE: I have NO sound and NO WIFI after:
1) Upgraded to Stock 5.0.1. - did not like it THEN I;
2) Downgraded back to Stock 4.2.2
- AP: I9505XXUAMDE
- CP: I9505DVUAMD8
- CSC: I9505XSAAMD8
------------------
Odin Mode
product name: GT-i9505
Current Binary: Custom
System Status: Custom
Knox Kernel Lock: 0x0
Knox Warranty Void: 0x1
CSB-Config-LSB: 0x30
WRITE Protection: Enable
eMCC Burst Mode: Enabled
------------------
Don't why the above says Custom Binary when I flashed a stock ROM from sammobile
Please Help !!!
Downgrading from stock 5.01 to stock 4.2.2 could have tripped knox and set the screen to say custom.
So the bootloader and modem are now on 4.2.2?
audit13 said:
So the bootloader and modem are now on 4.2.2?
Click to expand...
Click to collapse
How do I tell / test ?
When I type *#1234# I get:
- AP: I9505XXUAMDE
- CP: I9505DVUAMD8
- CSC: I9505XSAAMD8
For the gt-i9505, I see no KK ROM, only 5.01 ROM: http://www.sammobile.com/firmwares/database/GT-I9505/
Where did you get the 4.2.2 ROM?
What do you see under settings, phone for baseband?
audit13 said:
For the gt-i9505, I see no KK ROM, only 5.01 ROM ....
Click to expand...
Click to collapse
Not sure what you mean re KK ROM ...
I9505 5.0.1 Stock ROM is available here: "sammobile.com/firmwares/download/48665/I9505XXUHOF2_I9505AMNHOF1_AMN/"
" 2015-11-17 - 5.0.1 - I9505XXUHOF2"
audit13 said:
Where did you get the 4.2.2 ROM?
Click to expand...
Click to collapse
4.2.2 Stock ROM from "sammobile.com/firmwares/download/14150/I9505XXUAMDE_I9505XSAAMD8_XSA/"
audit13 said:
What do you see under settings, phone for baseband?
Click to expand...
Click to collapse
From Phone: Baseband version: I9505DVUAMD8
KK = Kit Kat which is 4.4.2. My mistake because 4.2.2 is Jelly Bean.
I searched sammobile.com for the s4 gt-i9505 and only found firmware for the link in my post above. Following your link, I found the firmware.
As far as I know, Knox did not exist until the 4.3 firmware which leads me to believe that the bootloader on the phone is either 4.3, 4.4, or 5.01 while the modem is older than 4.3. This may be causing the problem. As a test. flash back to stock 5.01 to see if sound and wifi work.
audit13 said:
As far as I know, Knox did not exist until the 4.3 firmware which leads me to believe that the bootloader on the phone is either 4.3, 4.4, or 5.01 while the modem is older than 4.3. This may be causing the problem. As a test. flash back to stock 5.01 to see if sound and wifi work.
Click to expand...
Click to collapse
I flashed back to 5.0.1 and Sound & WiFi now works again - what does that mean ?
How do I then Flash back to a Stock 4.2.2 ROM and have Sound & WiFi work after that ?
If it works on 5.01, then at least you know everything is working properly and the problem is the 4.2.2 rom.
i don't believe you can downgrade the bootloader to stock 4.2.2 which means you cannot run a stock 4.2.2 rom on the phone because the phone will have a bootloader that is not compatible with 4.2.2.
audit13 said:
If it works on 5.01, then at least you know everything is working properly and the problem is the 4.2.2 rom.
Click to expand...
Click to collapse
Yes - Sound & WiFi work fine when I flash back to 5.0.1
audit13 said:
i don't believe you can downgrade the bootloader to stock 4.2.2 which means you cannot run a stock 4.2.2 rom on the phone because the phone will have a bootloader that is not compatible with 4.2.2.
Click to expand...
Click to collapse
WT ??? Does that mean if you upgrade to Stock 5.0.1 you can NEVER downgrade back to Stock 4.2.2 ??
Yes, it certainly looks that way. On my i337m, I can flash back to stock 4.4.2 but nothing older.
audit13 said:
Yes, it certainly looks that way. On my i337m, I can flash back to stock 4.4.2 but nothing older.
Click to expand...
Click to collapse
Google you s^#(k !! how dodgy is that not allowing people to downgrade if there upgrades are crap!!
Is there another way ??
Can I downgrade back to 4.2.2 with another Bootloader or custom ROM ??
Would surprised if I am the only one in the world that wanted to downgrade and there was no known workaround ...
It has nothing to do with Google as it is Samsung that locks the bootloader.
If a phone could fully downgrade to a stock 4.2.2 rom, including the bootloader, I would not expect to see any references to Knox in download mode.
You could search but I have not seen any posts where an end user was able to downgrade the bootloader to a non-Knox version.
audit13 said:
Yes, it certainly looks that way. On my i337m, I can flash back to stock 4.4.2 but nothing older.
Click to expand...
Click to collapse
When you downgraded from 5.0.1 to 4.4.2 did you get any Know Issues OR Loss of Sound OR Loss of WiFi ?
Does the downgrade need to be a stock ROM ?
Knox was tripped from 0x0 to 0x1 but everything worked, probably because the everything went to 4.4.2, including the bootloader.
The downgrade does not have to be a stock ROM. Running a 4.3 or 4.4.2 custom ROM such as CM does not alter the bootloader or modem.
audit13 said:
Knox was tripped from 0x0 to 0x1 but everything worked, probably because the everything went to 4.4.2, including the bootloader.
The downgrade does not have to be a stock ROM. Running a 4.3 or 4.4.2 custom ROM such as CM does not alter the bootloader or modem.
Click to expand...
Click to collapse
Does that mean I can downgrade from Stock 5.0.1 all the way down to Stock 4.3 with no issues except Knox tripped to 0x1 ?
Or does it have to be a customer ROM to have no issues ?
I have never used custom ROM's only Stock ROM's
Some bootloaders can be downgraded to 4.1.1 like I did with my note 2 but the s3 can't be downgraded at all. I think the s4 is limited to 4.4.2 .
Downgrade i9505 to 4.4.2
I downgraded my galaxy s4 i9505 from 5.0.1 to 4.4.2 and knox flag was not tripped.I think it will be tripped only if you flash bootloader without knox.Maybe if you don't care of knox flag and want to run android 4.2.2 you must flash kitkat modem to have working wifi..
Hello mr. Marduj5
I'm also a Galaxy S4 user and want to install stock 4.2.2. I did everything you said... but the only problem now is the microphone and the speakers don't work after flashing Kitkat modem. I had the Connections but the media is now the problem. Thanks for the help...
Today is the time of Marshmallow and I am still in kitkat. I dont mean I want marshmallow but atleast I am waiting for lollipop in my GT-I9505 of baseband #XXUGNH6.. I know there is several lollipop for baseband I9505XXUPOL1 but still #XXUGNH6 don't have.. And other thing I dont want lollipop from any other custom rom!
-Thank you!
Have you tried manually checking for the OTA?
You could also try flashing it with Odin. This will not trip knox or affect flash counter.
Are u sure?
Flashing stock firmware via Odin will not trip Knox unless you are trying to downgrade.
Do you have any working Custom ROMs that will not trigger Knox Warranty Bit 0x0 to 0x1?
Or rather any working suggestions to avoid bootloader to be locked when flashing non-knox enabled firmware?
Please Confirm if the following were TRUE or NOT.
SITUATION 1:
Official Lollipop 5.0.1 to Official Kitkat 4.4.2
KNOX will retain at 0x0
SITUATION 2:
Official Kitkat 4.4.2 to Official Lollipop 5.0.1
KNOX will retain at 0x0
SITUATION 3:
Official Kikat 4.4.2 to Official Jellybean 4.3
KNOX will retain at 0x0
SITUATION 4:
Official Jellybean 4.3 to Official Kitkat 4.4.2
KNOX will retain 0x0
SITUATION 5:
Official Jellybean 4.3 to Official Kitkat4.4.2
KNOX will retain at 0x0
SITUATION 6:
Official JB 4.2 to Official JB 4.3/KK 4.4/LP 5.0.1
KNOX will retain at 0x0
SITUATION 7:
Official JB 4.3/KK 4.4/LP 5.0.1 to Official JB 4.2
KNOX will issue at 0x1
Downgrading to JB 4.2 will restrict user to upgrade to higher Android Version.
But User can flash Custom ROM all they want?
The bootloader isn't locked by flashing any kind of firmware.
Your device either comes with a locked bootloader or an unlocked bootloader. Verizon and AT&T phones usually have a locked bootloader.
You can find some info here.
But it's seems a lot of hassle and isn't really worth it unless you are using KNOX or count on the warranty.