Hide the bootloader warning unlocked message on Samsung A30 after root device

[blascogm]

Hide the bootloader warning unlocked message on Samsung A30 after root device

This mod was made thanks to the help of: @tys0n

Tested on Samsung A30 (SM-A305G)

The warning message that appears when you turn on the cell phone after having unlocked the bootloader and rooted the phone with Magisk Canary is really annoying.

However, with the help of an XDA member, I have learned to modify the bootloader param.bin file and then flash with ODIN.

For ROOT users, I am not responsible for damages, or loss of the guarantee or data of your cell phone. If you proceed with this tutorial ... you are accepting that you do it at your own risk according to your previous knowledge:

STEP 1:
Download the correct firmware of your Samsung from SAMMOBILE (A10, A30, A50, etc).

STEP 2:
Unzip the firmware files with an extractor (winrar, etc)
View attachment 4801820
STEP 3:
Open the BL file WITH 7-ZIP EXTRACTOR (example) BL_A305GUBU2ASF2_CL16214341_QB24234542_REV00_user_low_ship.tar.md5
View attachment 4801821
STEP 4:
Extract the param.bin.lz4 file WITH 7-ZIP EXTRACTOR

STEP 5:
Open the param.bin.lz4 file WITH 7-ZIP EXTRACTOR and extract the param.bin file
View attachment 4801822
STEP 6:
Extract param.bin WITH 7-ZIP EXTRACTOR. Here some images are extracted in a folder.

STEP 7:
Look for the jpg image: booting_warning (contains the yellow triangle image and red bootloader unlock warning text). We will replace this image later with a black one. Attached file 870x 473 pixels:


STEP 8:
OPTIONAL: The svb_orange.jpg file (1080 x 2340 pixels) contains the warning message with the option that says PRESS POWER KEY TO CONTINUE. If you want you can change it to an image identical to the boot or leave it unmodified. In my case I changed to another image in which I added the google logo:


STEP 9:
Open param.bin with 7-zip and replace booting_warning.jpg and svb_orange.jpg (optional) by dragging the files into the window.
View attachment 4801823



STEP 10:
Close 7-zip, now you have modified param.bin.

STEP 11:
Convert param.bin to TAR format to flash with ODIN: Select param.bin, right click, choose 7-zip ZS, then add to the file, finally click on file format and change to tar. Accept (OK) and ready we will have the param.tar file ready for ODIN.

STEP 12:
Open ODIN 3.13.3, start your phone in download mode, load the param.tar file in the BL section and click on start.

Note: At the end of the flashing with ODIN the phone restarts showing the modified image, but it starts in recovery mode, you just have to accept restarting the phone, and it will start normally without losing data or the configuration of your Samsung A30.

OTHER BOOTLOADER UNLOCK IMAGE (rename to svb_orange):


I hope it is very useful. Param.tar archive mod for Samsung A30 SM-A305G:

 

[Akihikoryusuke]

Doing this, do you still need to press the power button to continue?

 

[blascogm]

Doing this, do you still need to press the power button to continue?

It is not necessary to press the power button to continue, you can wait for it to finish just starting. This modification only changes the warning images of the unlocked bootloader so that it looks aesthetically good.

 

[Tayyab Sohail]

Bro I have already unlocked bootloader if now I will locked bootloader then what happens or may be damage my device
Please tell me

 

[blascogm]

Bro I have already unlocked bootloader if now I will locked bootloader then what happens or may be damage my device
Please tell me

Nothing happens if you want to lock the bootloader again. The only problem is that all information and settings on your phone are deleted.

 

[bangeko]

This is for SM-A305F running A305FDDU1ASD5.

 

[Tayyab Sohail]

Bro i need to relock bootloader when i will go to download mode then relock bootloader after factory reset then it will show me in download mode in failure.will i go to settings or developers option turn off oem and again relock bootloader tell me

 

[LeonardoGC]

Hide the bootloader warning unlocked message on Samsung A30 (SM-A305G) after root with Magisk

STEP 12:
Open ODIN 3.13.3, start your phone in download mode, load the param.tar file in the BL section and click on start.

Thanks blascogm for providing this procedure.

Regards

 

[rezarac]

what's the heimdall command to flash param.tar?

 

[rezarac]

what's the heimdall command to flash param.tar?

I tried

heimdall flash --PARAM param.bin

where param.bin is before step 11 (Convert param.bin to TAR format).

But the replaced images display corrupted. Can flash the original param.bin successfully, just not the modified one.

 

[ITEasterbunny]

You also could lock the bootloader again with
Fastboot OEM lock
And the message is gone, the settings will be reset, but the device will still be rooted, and you can unlock bootloader at any moment again.

 

[Bode327]

Thanks

Sent from my SM-A305GT using XDA Labs

 

[Deluriane]

Hello and good day! How do you open param.bin.lz4 to extract param.bin? Tried using 7zip but I get an error "cant open archieve" opening the file on 7zip.

 

[LeonardoGC]

Hello and good day! How do you open param.bin.lz4 to extract param.bin? Tried using 7zip but I get an error "cant open archieve" opening the file on 7zip.

Hi.

Try this Android app: ZArchiver

 

[Deluriane]

Hi.

Try this Android app: ZArchiver

Thanks! The Zarchiver did it's job! Im gonna try rooting again and this time I hope the warning msg's will be gone.

 

[mrao]

You also could lock the bootloader again with
Fastboot OEM lock
And the message is gone, the settings will be reset, but the device will still be rooted, and you can unlock bootloader at any moment again.

You cannot use fastboot commands on Samsung devices, they don't support fastboot protocol. The only way to relock the bootloader is to boot to the warning screen before download mode, and long press vol+

 

[marlour]

Hi

I successfull rooted my A80 (SM-A805F), I wanted to hide this warning but there is no param.bin.lz4 file in BL.
Do you know how to do it for A80?

 

[Virnik0]

it is up_param.bin for SGS10+. Still trying to find out what is the right compression ratio for both jpg files as well az 7zip archive to create. I tried several times now, but the file always produces garbled screen during reboots.

 

[rumrunner4000]

Virnik0,
I have a Samsung Tab 5e and I am also trying to find param.bin or the new variation of it. could you tell me were and how you found yours?

 

[lebigmac]

.