"upgrade" z1 compact

[user1254]

Hi everyone,
i have a xperia z1 compact phone and i'm a newbie in the world of custom rom, kernels, ecc..
A few days ago i flashed a new custom rom and the phone is working pretty well, but i have a question here..
Can i use a stock firmware (let's say original lollipop 5.1) with just a new kernel?
I was thinking about not installing a completely new rom but just a new kernel and the xposed installer to change something on this phone, is that possible?
If android releases a new version of android and i upgrade my version, do i have to reinstall the kernel? And some apps from sony's firmware are quite useless (at least for me), could i delete them just like a new rom? (ofc with root)
I just want a stock firmware with a new kernel that can use less battery possibly.. I don't need overclocking or stuff like that, just battery life i would say..
Sorry my bad english though and thank you all for your attention!

 

[levone1]

Hi everyone,
i have a xperia z1 compact phone and i'm a newbie in the world of custom rom, kernels, ecc..
A few days ago i flashed a new custom rom and the phone is working pretty well, but i have a question here..
Can i use a stock firmware (let's say original lollipop 5.1) with just a new kernel?
I was thinking about not installing a completely new rom but just a new kernel and the xposed installer to change something on this phone, is that possible?
If android releases a new version of android and i upgrade my version, do i have to reinstall the kernel? And some apps from sony's firmware are quite useless (at least for me), could i delete them just like a new rom? (ofc with root)
I just want a stock firmware with a new kernel that can use less battery possibly.. I don't need overclocking or stuff like that, just battery life i would say..
Sorry my bad english though and thank you all for your attention!

There are at least a couple of custom kernel options in this forum. Check ' development' and 'original development' threads. You can usually tell if they work for stock if they have either 'stock' or a build number, (e.g. 368), in the thread title. Otherwise they may be CM based, and won't work.

 

[user1254]

There are at least a couple of custom kernel options in this forum. Check ' development' and 'original development' threads. You can usually tell if they work for stock if they have either 'stock' or a build number, (e.g. 368), in the thread title. Otherwise they may be CM based, and won't work.

Thank you for your answer.
Is there much difference beetwen build numbers? (757,368,242,...) i searched on the net but i didn't find something really useful to let me understand the difference D:

 

[levone1]

Thank you for your answer.
Is there much difference beetwen build numbers? (757,368,242,...) i searched on the net but i didn't find something really useful to let me understand the difference D:

Android 5.1 on this phone is .368.
5.0 is .270 or .242
The others are KitKat, (either 4.1, 4.2, 4.3, or 4.4).

 

[F308]

For the first - as always - be 120% sure that kernel you want to install is compatible with remaining system parts.
Base thing - stock to stock, non-stock to non-stock, but it is not everything.
Changes between versions them may be too big to play together.
You don't put any tires to any car. You need to know that dimensions fit.
Same here.