Galaxy A40 [SM-A405FN] Bootlogo mod.

Couldn't we had 'fullscreen custom logos' before?
Why did you choose to leave the message of the "svb_orange"? We all know bootloader is unlocked, message is useless and undesirable since boot continues anyway after a few secs (no need to press power).

Anyway, that's what I've done on mine, replaced it with a nice screen, acting as second (boot)logo.

We could have used full screen, but it would have looked like this cause the image is still there, just blacked out.
Attachment 4847521

What are you trying to do? Flashing bootlogo mod from first post or creating your own?

Got no feedback, so I decided to create my own bootlogo and sucessfully flashed it using Odin.
Even put the Magisk logo on it

A quick how-to using Windows:

You know the drill, if you manage to damage your device when doing this, it's your own fault!

1. Download the firmware for your device from your preferred server (samfrew updato , select region, version), alternatively jump to the end for faster approach, but you may need knowledge described in next steps anyway

2. Have installed 7zs

3. Right-click the firmware file > 7Zip ZS > Open Archive > then double-click (dc) file that starts "BL.." > again dc param.bin.lz4 > again dc param.bin > extract all files

4. Files to customize are:
booting_warning.jpg
logo.jpg
svb_orange.jpg

Use favorite image editor (Paint works!)
Make sure you keep the default resolution and do not create much bigger files than the originals, a little bit smaller or bigger it's okay, but not too much.

5. Again using 7zs create a tar archive format with the files you edited and the rest you have extracted before, name the archive param.bin (literal, NOT param.bin.tar)
(7Zip ZS > Add to Archive > Archive Format: tar > Archive (name): param.bin)

6. And then again, create another tar file with the param.bin in it (archive name may be anything)

7. Using Odin, load the tar file you created on the previous step to the AP slot, connect the phone in download mode and flash

Alternatively, to save data and time download bootlogo mod from first post, just extract files, edit and repack again using similar manner as described above
(in the end you should have a file with tar extension instead of MD5 because archive does not have MD5 checksum attached, so Odin will not check data integrity)

OLDER METHOD:

Attachment 4790669 Original ---> Changed to: Attachment 4790670

Attachment 4790672 Original---> Changed to: Attachment 4790673

Attachment 4790671
This blacked out so that it won't show on the black logo background.

Unzip Attachment 4790675 and put the tar.md5 in AP slot in Odin. Connect phone in download mode and start flash.

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Hi tys0n, nice work!! Could that procedure (or something similar) also work for a A70 (SM-705FN/DS) with TWRP?

Perhaps files and directories are différents...