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

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By blascogm, Senior Member on 4th August 2019, 11:02 PM
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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)
Click image for larger version

Name:	firmware extraer.PNG
Views:	4392
Size:	16.4 KB
ID:	4801820
STEP 3:
Open the BL file WITH 7-ZIP EXTRACTOR (example) BL_A305GUBU2ASF2_CL16214341_QB24234542_REV00_user_ low_ship.tar.md5
Click image for larger version

Name:	Abrir BL.PNG
Views:	4100
Size:	14.6 KB
ID:	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
Click image for larger version

Name:	extraer param.PNG
Views:	3312
Size:	24.0 KB
ID:	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:
Click image for larger version

Name:	booting_warning.jpg
Views:	3608
Size:	77.2 KB
ID:	4801824

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:
Click image for larger version

Name:	svb_orange.jpg
Views:	3674
Size:	127.6 KB
ID:	4801825

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.
Click image for larger version

Name:	abrir param.PNG
Views:	3740
Size:	17.5 KB
ID:	4801823
Click image for larger version

Name:	booting_warning-2.jpg
Views:	3588
Size:	35.8 KB
ID:	4801828
Click image for larger version

Name:	svb_orange-2.jpg
Views:	3782
Size:	69.9 KB
ID:	4801829

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):
Click image for larger version

Name:	svb_orange(2).jpg
Views:	4090
Size:	74.8 KB
ID:	4801851

I hope it is very useful. Param.tar archive mod for Samsung A30 SM-A305G:
Attached Files
File Type: tar param.tar - [Click for QR Code] (2.24 MB, 2150 views)
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12th August 2019, 03:49 PM |#2  
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Doing this, do you still need to press the power button to continue?
12th August 2019, 11:48 PM |#3  
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Quote:
Originally Posted by Akihikoryusuke

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.
18th August 2019, 03:32 AM |#4  
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Bro I have already unlocked bootloader if now I will locked bootloader then what happens or may be damage my device
Please tell me
18th August 2019, 06:10 PM |#5  
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Quote:
Originally Posted by 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

Nothing happens if you want to lock the bootloader again. The only problem is that all information and settings on your phone are deleted.
29th August 2019, 11:33 AM |#6  
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This is for SM-A305F running A305FDDU1ASD5.
Attached Files
File Type: tar param.tar - [Click for QR Code] (2.24 MB, 272 views)
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8th September 2019, 03:01 AM |#7  
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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
8th September 2019, 03:29 PM |#8  
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Quote:
Originally Posted by blascogm

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
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11th September 2019, 12:34 AM |#9  
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what's the heimdall command to flash param.tar?
11th September 2019, 01:43 AM |#10  
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Quote:
Originally Posted by rezarac

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

I tried

Code:
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.
29th October 2019, 03:05 PM |#11  
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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.
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a30, bootloader, pie, samsung, unlocked

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