[Bootloader U4] [A40] First version and mod no warnings.

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xinek

Senior Member
Jul 16, 2022
77
25
Poland
One of the first u4 bootloader versions available, and modded by me so that there are no warnings about unlocked botloader and non-standard system.

Features:
-No warnings
-The first version of u4



Downloads:


Credit/Thanks:
@xinek

known bugs:
if your phone stays in download mode after installing bootloader, you will need to reinstall twrp and vbmeta.

error may occur if you are using custom recovery.
 
Last edited:

szucsy92

Senior Member
Sep 16, 2013
105
23
30
Hungary
Thank you Man!! 💗
Im try it! ;)
Flash with odin. Rename CP md5 to tar and flash it together?
 
Last edited:
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TheWinner02

Senior Member
Sep 11, 2018
121
85
20
Sicily
Samsung Galaxy A40
One of the first u4 bootloader versions available, and modded by me so that there are no warnings about unlocked botloader and non-standard system.

Features:
-No warnings
-The first version of u4



Downloads:


Credit/Thanks:
@xinek

known bugs:
if your phone stays in download mode after installing bootloader, you will need to reinstall twrp and vbmeta.

error may occur if you are using custom recovery.
you have last_kmsg file whit this BL?
 

misotauros

Member
Oct 13, 2019
28
6
Thank you for your work! Since it seems to be problematic for some people to go for BL U4 - would it be much work to do the same for BL U3? Would you care to public the changes you made to the U4 BL? It would be really nice to get rid of this warning page.
 
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xinek

Senior Member
Jul 16, 2022
77
25
Poland
Dziękujemy za Twoją pracę! Ponieważ niektórym osobom wydaje się problematyczne przejście na BL U4 - czy zrobienie tego samego dla BL U3 wymagałoby wiele pracy? Czy chciałbyś opublikować zmiany, które wprowadziłeś do U4 BL? Byłoby naprawdę miło pozbyć się tej strony z ostrzeżeniem.
if you send some working u3 bootloader, i can do it for you in a moment
 

misotauros

Member
Oct 13, 2019
28
6
I took the liberty to check upon your file.
it includes unmodified cm.bin, sboot.bin and vbmeta.bin all in lz4.
Then there is param.bin without lz4 and that differs from the original.
But I can see param.bin is just cosmetics.

Anyhow... does the phone still wait about 10 seconds just not showing a picture at all?

you don't need to edit perm.bin to remove the warnings, put this file in odin and it should work.
 

xinek

Senior Member
Jul 16, 2022
77
25
Poland
I took the liberty to check upon your file.
it includes unmodified cm.bin, sboot.bin and vbmeta.bin all in lz4.
Then there is param.bin without lz4 and that differs from the original.
But I can see param.bin is just cosmetics.

Anyhow... does the phone still wait about 10 seconds just not showing a picture at all?
phone boots like original system without bootloader unlocked.
 

misotauros

Member
Oct 13, 2019
28
6
So short update:

I flashed param.bin (no need to flash the others) and the phone wont show the warning signs. As expected the routine to wait for 10 secs or so is still in place.

However it is much nicer this way and I thank you for that!
 

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