Basically, I've searched for this question but no concrete answer to be found. I am following a rooting tutorial and it says to flash stock firmware through Odin and then flash TWRP.
I have found the stock firmware for my country (Android 8), but other cell carrier than mine, and the phone is currently running Android 9.
Can I just flash TWRP without flashing a stock firmware beforehand, or is it necessary to flash a stock firmware first, and if so, what about the different carrier and a previous Android version?
xShx72 said:
Basically, I've searched for this question but no concrete answer to be found. I am following a rooting tutorial and it says to flash stock firmware through Odin and then flash TWRP.
I have found the stock firmware for my country (Android 8), but other cell carrier than mine, and the phone is currently running Android 9.
Can I just flash TWRP without flashing a stock firmware beforehand, or is it necessary to flash a stock firmware first, and if so, what about the different carrier and a previous Android version?
Click to expand...
Click to collapse
Before flashing TWRP, it is a good idea to flash the latest firmware to get the latest version of the modem, which will be useful for use with custom ROM.
Carefully read the TWRP flashing instructions so there are no surprises.
If you don't want to change the original firmware, then flash TWRP.
beware, latest firmware may bring new security updates such as vaultkeeper or RMM protection to your device.
you can flash different CSC with modded Odin (not recommended) but you can't downgrade bootloader.
use Samloader or Bifrost to download from official Samsung server for your region.
Related
Hello,
I would like to have installed the latest update, version 6, but the phone does not fit, and I would return to the old version that was perfect. from what I understand, you only need to download the original ROM, put it in the root, and install it manually?
Ideally all you need is the original firmware and any recovery - oneplus stock or twrp. Take the exact rom you want from the oneplus website download section and flash in recovery. Both recoveries will yield the same result no matter which rom you flash as long as it is stock
pippi80 said:
Hello,
I would like to have installed the latest update, version 6, but the phone does not fit, and I would return to the old version that was perfect. from what I understand, you only need to download the original ROM, put it in the root, and install it manually?
Click to expand...
Click to collapse
Just to be safe use old stock recovery you can fastboot flash twrp after.
Or simply follow this thread
Please, before install this stock firmware unlock your phone bootloader http://forum.xda-developers.com/showthread.php?p=67027842
This is a new Stock ROM, based on new SM-N915V N915VVZW2CQI3 firmware. If you install this firmware by ODIN, your SM-N915V phone firmware will be latest N915VVZW2CQI3 and you will not loose developer edition unlocked bootloader.
Step 1: download and install this stock firmware https://mega.nz/#!knRXxSCZ!3mwUAi0FXpGN-E0zPjBqx5Hf_YLSK8Ror8VQH5JiE54
Step 2: install TWRP https://mega.nz/#!NhkSxQJJ!GYaYWs2z0Mxj0Ht9aFpFvFeehf-8dFKUVt_ToIjpC8s
Step 3: install SuperSU.zip https://mega.nz/#!ErxDFboQ!n3M0zLP271shYSsK7Mtzr0F031c3UXugv6b45Pr_OvE
And I add an original stock unchanged firmware. May be somebody needs it. If you use it your bootloader will be locked .
Download original: https://mega.nz/#!pmIBCSCQ!lTRg2TqYaw7XOaz8WcJ6XsoCXU1gwCqunYl5bjM-hZs
I have only ever flashed the following after rooting..
1)twrp
2)super su (later unSU.zip-ed)
3)cm-13.0-20170116-SNAPSHOT-ZNH5YAO3Y9-condor.zip
4)lineage-13.0-20170621-STABLE-condor.zip
5)magisk
so..
do i need to flash stock firmware or stock rom using Retail Dual-SIM (Asia | World) 5.1 ROM (Untouched) (459mb)
if i use stock firmware.. ( referring to guide )
1) as i have never made modifications to radio/modem do i need to "flash modem NON-HLOS.bin"
2)as mentioned here
"WARNING: Flashing a Firmware Image is not a safe way to downgrade. Avoid flashing 'motoboot.img."
do i need to flash motoboot.img
3) i have twrp as recovery i would want it to remain so if possible in stock rom ... do i need to flash "flash recovery recovery.img"
THANKS.. any help is really appreciated.:angel:
shdxda said:
I have only ever flashed the following after rooting..
1)twrp
2)super su (later unSU.zip-ed)
3)cm-13.0-20170116-SNAPSHOT-ZNH5YAO3Y9-condor.zip
4)lineage-13.0-20170621-STABLE-condor.zip
5)magisk
so..
do i need to flash stock firmware or stock rom using Retail Dual-SIM (Asia | World) 5.1 ROM (Untouched) (459mb)
if i use stock firmware.. ( referring to guide )
1) as i have never made modifications to radio/modem do i need to "flash modem NON-HLOS.bin"
2)as mentioned here
"WARNING: Flashing a Firmware Image is not a safe way to downgrade. Avoid flashing 'motoboot.img."
do i need to flash motoboot.img
3) i have twrp as recovery i would want it to remain so if possible in stock rom ... do i need to flash "flash recovery recovery.img"
THANKS.. any help is really appreciated.:angel:
Click to expand...
Click to collapse
1. See you can surely flash stock firmware there is no Risk unless and until you flash 4.4.2 and update it to 4.4.4 if you do it you'll most probably HardBrick your phone so my recommendation is to flash 4.4.4 or 5.1 and never update your phone via updater...
2. And yes you'll have to flash Twrp.img after flashing stock firmware as flashing firmware change your recovery to stock.
3. Yup motoboot.img is needed to flash.
4. Refer to the batch file I've attached.
Hello,
I have been trying to install Android 11 on my phone (Galaxy S9 SM-G960U1) for a while. I have realized that in order to flash new firmware onto my phone, it must be signed or the bootloader won't accept it. When I flash non-signed custom firmware, Odin returns an error about authorization.
Only OEMs/Carriers sign Stock ROMs / OTAs provided by them. ODIN works with Stock ROMs only.
To flash a Custom ROM you need TWRP or similar.
jwoegerbauer said:
Only OEMs/Carriers sign Stock ROMs / OTAs provided by them. ODIN works with Stock ROMs only.
To flash a Custom ROM you need TWRP or similar.
Click to expand...
Click to collapse
I cannot use TWRP without rooting my phone, which will take some time. I will use the Extreme Syndicate method (https://forum.xda-developers.com/ga...pment/root-t4041815/post81608559#post81608559) to root my phone, then install TWRP.
jwoegerbauer said:
Only OEMs/Carriers sign Stock ROMs / OTAs provided by them. ODIN works with Stock ROMs only.
To flash a Custom ROM you need TWRP or similar.
Click to expand...
Click to collapse
I tried using TWRP, but I got the error:
Security Error: This phone has been flashed with unauthorized software & is locked. Call your mobile operator for additional support. Please note that repair/return for this issue may have additional cost.
I extracted the boot.img from the latest factory Android 10 and made it into .tar. If I install it via Odin, would I then be able to downgrade to the Samsung factory firmware v10? If not, can I downgrade to Android 11?
boot.img is just the kernel, it's not really what's keeping you from downgrading. If you want to use something like Android 10 you're going to have to install custom recovery (root) and flash boot.img, system.img, vendor.img and a few things I may be missing. And even then, this isn't a guarantee that it'll boot.
Once bootloader updates there is no flashing backwards. The only way you can is if the firmware you are flashing to has same bootloader version that you are already on
idk if its even possible
because it'll cause a bootloop
my suggestion is - dont try it