Remove AT&T logo?

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Basically I want to get rid of the AT&T logo from the boot screen because I'm unlocked and on another carrier.
I've been trying to work out how to do this but to no avail. Apparently I need to hard root by doing this:

(from androidcommander.com)

Edit your boot image.
Pull out your boot.img.
Unpack.
Edit default.prop file, set value „ro.debuggable” to „1″.
Re-Pack.
Flash.

Can anyone tell me how to actually do this or if it's even possible on the Captivate Glide?

The AT&T logo at boot isn't part of the boot.img, that's the boot animation. Samsung uses their own format for the bootanim, so you can't just replace it with one of the thousands out there, but you should be able to replace it with the bootanim from another samsung phone. I'll see if I can dig up the link where someone replaced it with the anim from an SGIII.

Originally Posted by bakageta

The AT&T logo at boot isn't part of the boot.img, that's the boot animation. Samsung uses their own format for the bootanim, so you can't just replace it with one of the thousands out there, but you should be able to replace it with the bootanim from another samsung phone. I'll see if I can dig up the link where someone replaced it with the anim from an SGIII.

I know the boot.img doesn't contain the animation. But according to a guide that I read I have to edit the boot.img file in order to hard root the phone so that I can then delete the bootsamsung.qmg file which contains the AT&T animation so I can just have a blank screen at the startup.

I've never heard that called "hard root" before but it's baked into the keyboard light fix which you probably have installed anyway.

Sent from my SGH-I927 using xda premium

Well, according to someone else, none of that is necessary, you can just replace the .qmg files and be set.

Originally Posted by brunobbarcelos

I changed the bootanimation, now using the ICS stock from Galaxy SII. Just had to copy two .qmg files over the old ones, set the permissions, wiped cache and dalvik. Did this because while we don´t have custom kernel will not be possible to use .zip bootanimation and i couldn´t find a way to edit .qmg file.

Originally Posted by brunobbarcelos

The Zip with ICS Galaxy SII boot files, i used only bootsamsung.qmg and bootsamsungloop.qmg.

Rename old ones
Copy new,
Change permissions,
Reboot cwm,
Wipe cache and dalvik,
Boot twice

(that´s how worked for me).

Permissions:

x x 0
x 0 0
x 0 0
____

0 0 0

Android Commander won't let me rename the bootsamsung.qmg file though so I don't see how I could replace it.

Did you make sure you mounted /system as rw? I was able to rename the files and copy over the new ones just fine through a terminal window.

(edit)
To clarify, I put the two .qmg files in /sdcard, and then did the following from a terminal (or adb shell):

su
mount -o rw,remount /dev/block/platform/sdhci-tegra.3/by-num/p2 /system
mv /system/media/bootsamsung.qmg /system/media/bootsamsung.qmg.bak
mv /system/media/bootsamsungloop.qmg /system/media/bootsamsungloop.qmg.bak
cp /sdcard/bootsamsung.qmg /system/media/bootsamsung.qmg
cp /sdcard/bootsamsungloop.qmg /system/media/bootsamsungloop.qmg
chmod 644 /system/media/bootsamsung.qmg
chmod 644 /system/media/bootsamsungloop.qmg

I didn't need to wipe cache or dalvik, and it worked perfectly on first reboot - I now have the Galaxy SII boot logo. I'm now off to poke around and see if I can find anything I like better.

Let me know if you find anything you like better. I'm thinking if I'm going to replace the AT&T logo I just want something generic, not the name of another phone model.

Yeah, I'm not big on having it say Galaxy SII at the bottom. Ideally I'd like the plain ICS animation, but I doubt any samsung phone came with that. Next up is anything that's just generic Samsung, and if that fails, I'm looking for something that just says Galaxy S, since the phone was sold as the Galaxy S Glide in Canada.

If there's a way to convert a normal bootanimation.zip into a bootsamsung.qmg that'd be ideal, but I don't think it can be done. Or if we could make the Glide accept a bootanimation.zip that'd be perfect.