How to edit custom ROM - Android Software/Hacking General [Developers Only]

Hi I want to edit the FZF custom ROM for my Huawei U8100-9 so that I don't have to restore or flash apks each time.
All I want to do is take the FZF 5.2 rom, add some apk's to it, and be able to flash that as a ROM.
What do I need to do this?

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[Q] How to replace a stock kernel with another inside a rom.

I've been opening up cm roms and modifying them to the way I want them, replacing audio files, wallpapers, apps, icons, theme, etc etc for a few months now. I know how to include gapps into a rom successfully so I dont have to flash that separatly. My question if I wanted to remove the stock kernel from a nightly and replace it with say pershoots kernel how would I go about that? Thanks in advance
go to chef central download the nadroid kitchen, ther eyou can extract the boot.img and replace the kernel and pack it up again and build into your om, the kitchen is great, go try it man so easy that way
Thanks man
Or use Koush's AnyKernel update.zip template.

[REQUEST] Stock Boot Animation 5.1.1 Flashable Zip for Custom ROMs

Does anyone know how to get the STOCK Sprint boot animation from a stock rom? I've looked on extracting things from our .tar files but nothing clear on boot animations. I just like the stock animation, but want to stay on MOAR.
Any help on how to get it, or if someone could create it, that would be just plain jane awesomesauce.
Thanks,
Mike
assuming the CSC is correct on your rom of choice. The files you are looking for are in /system/media and they are SPR_bootsamsungloop.qmg, SPR_bootsamsung.qmg, and SPR_Shutdown.qmg. Taking a stock tar wont work, find yourself a stock rom, (deodex is fine) and grab the files and replace them and make sure to set permissions and you should be fine.

Custom Rom Build.Prop Edit

If I install a custom rom, can I edit the build.prop? If so, is there a certain custom rom, I need to look for?
I saw where I may be able to go back to Android 10, install TWRP, pull and push needed files?

Q: creating flashable rom backup

hello everyone, Iam wondering..
I remember back in the day with CWM recovery, it was possible to make current running rom backup with all apps settings, everything into a single .img file wich was flashable from recovery and then even if u had empty device you would get rom and everything back.
Nowdays twrp makes rom backup into a multiple files wich are not flashable.. so Iam wondering
is there a way nowdays to make complete full rom backup into a single flashable file please?
possible to make flashable rom image from recovery or not ???
any ideas how to do it guys?

Remove gapps from Miui 9 custom rom

I installed a miui 9 rom on my old samsung but it has gapps preinstalled. My phone has 1 gb of ram and it lags and the battery drains fast. I like the ui but i dont want gapps. Any way to delete them? Can i just delete the apks from /app and /priv-app?
Edit: The method above worked. Extract the rom zip, delete the apks and make a new zip without the apks then flash it

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