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[Q] Flashing kernals and roms questions

I have a kernel that i found that i want to flash. When you flash a kernel, does it replace a flashed ROM or do they combine?
Also, when you flash anything (ROM or kernel) does it replace the stock ROM or does it take a spot next to it? Can you make several spots so there can be more than one ROM? What is wiping out a ROM? If you leave a ROM, can you save your setting so when you go back you don't have to start over again? Can you back up contacts,messages, and apps from stock ROM and extract the data to the new ROM?
I AM CONFUSED

pranker98 said:
I have a kernel that i found that i want to flash. When you flash a kernel, does it replace a flashed ROM or do they combine?
Also, when you flash anything (ROM or kernel) does it replace the stock ROM or does it take a spot next to it? Can you make several spots so there can be more than one ROM? What is wiping out a ROM? If you leave a ROM, can you save your setting so when you go back you don't have to start over again? Can you back up contacts,messages, and apps from stock ROM and extract the data to the new ROM?
I AM CONFUSED
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1. No, they "combine"
2. It replaces it when you flash
3. Yes, but its more complicated than just flashing multiple roms. There is an app but it doesn't support Sensation.
4. Wiping a ROM is just that, wiping your phone of the ROM along with all your app,data and anything else on the phone(SD card not effected).
5. Umm. I don't understand your question completely but yes flashing a new ROM over an old ROM will preserve your data but you can flash a different rom and expect it to work. For example ARHD-->ARHD(updated) is OK but ARHD --> Insertcoin wont work.
6. Yes, its called titanium backup. Look it up.

thanks. after reading this, I stumbled on radios. what are radios?

pranker98 said:
thanks. after reading this, I stumbled on radios. what are radios?
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Radio is what gives your phone signal. which version works best for you will depend on your location and carrier so you will just have to experiment. its generally advised that you flash the latest recommended version stated on the rom your using

pranker98 said:
I have a kernel that i found that i want to flash. When you flash a kernel, does it replace a flashed ROM or do they combine?
Also, when you flash anything (ROM or kernel) does it replace the stock ROM or does it take a spot next to it? Can you make several spots so there can be more than one ROM? What is wiping out a ROM? If you leave a ROM, can you save your setting so when you go back you don't have to start over again? Can you back up contacts,messages, and apps from stock ROM and extract the data to the new ROM?
I AM CONFUSED
Click to expand...
Click to collapse
kevinliu2336 said:
1. No, they "combine"
2. It replaces it when you flash
3. Yes, but its more complicated than just flashing multiple roms. There is an app but it doesn't support Sensation.
4. Wiping a ROM is just that, wiping your phone of the ROM along with all your app,data and anything else on the phone(SD card not effected).
5. Umm. I don't understand your question completely but yes flashing a new ROM over an old ROM will preserve your data but you can flash a different rom and expect it to work. For example ARHD-->ARHD(updated) is OK but ARHD --> Insertcoin wont work.
6. Yes, its called titanium backup. Look it up.
Click to expand...
Click to collapse
The only thing I'd add is that for:
o If you leave a ROM, can you save your setting so when you go back you don't have to start over again?
You can do a Nandroid backup from CWM recovery, it takes a snapshot of the ROM, Kernel, Data,.. You can then play with other ROMs. Then at a later date restore the Nandroid backup from CWM and you're back at the earlier ROM.
It's extremely important that when you play with ROMs you backup a working version. It saves a lot of swearing when you lose a nice working system unintentionally. It's happened a couple of times to me and it's a bugger.

Stock kernel

Hi guys, I was wondering If I was to revert to stock google kernel from a custom kernel on stock rom, would I just need to flash it? Or do I need to factory reset etc? thanks in advance

zubsz said:
Hi guys, I was wondering If I was to revert to stock google kernel from a custom kernel on stock rom, would I just need to flash it? Or do I need to factory reset etc? thanks in advance
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Only flashing the stock kernel is ok but it is preferable to also flash the system.img as the custom kernel might have left some codes in it but no need to factory reset it.

[Q] Restore stock rom without wiping?

Is there any way to restore stock rom without wiping? I currently have stock rom with mods and franco kernel.

Someone told me to flash a .zip of the stock rom on one of the threads on here to achieve that.
I wanted to go back to stock after trying Franco. Then I tried elementalx and my battery life went up so much I don't want to go back.
Sent from my Nexus 5 using xda app-developers app

overkillZ said:
Is there any way to restore stock rom without wiping? I currently have stock rom with mods and franco kernel.
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Flash the system.img and boot.img files (found in the factory image) using fastboot.

If you backed up your phone or made a nandroid before messing around with your phone, that's usually your best option.
I'd personally advise against just flashing without wiping, because the part of the point would be to remove the garbage files, which wouldn't really happen.

overkillZ said:
Is there any way to restore stock rom without wiping? I currently have stock rom with mods and franco kernel.
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Click to collapse
You can flash stock ROM and kernel (system.img and boot.img) from the factory image without wiping. While it's okay to go from a custom kernel back to stock kernel, I wouldn't go from a custom ROM back to stock ROM without completely reflashing.

BirchBarlow said:
You can flash stock ROM and kernel (system.img and boot.img) from the factory image without wiping. While it's okay to go from a custom kernel back to stock kernel, I wouldn't go from a custom ROM back to stock ROM without completely reflashing.
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I have stock rom but but with small mods like dalvik optimizing and xposed etc

[Q] Flashable Boost Stock Rom

Hey guys, is there a way to just Flash a stock Boost ROM instead of having to flash the stock firmware using PC?

ishred11 said:
Hey guys, is there a way to just Flash a stock Boost ROM instead of having to flash the stock firmware using PC?
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From what I've found, this is the only flashable stock ROM:
http://androidforums.com/cdma-moto-...k-4-4-2-deodexed-unmodified-boost-mobile.html
I haven't tried flashing it, myself - when I need to go stock, I just flash the stock firmware via PC.
:good:

Thanks, will there be problems going from 4.4.4 to 4.4.2?

ishred11 said:
Thanks, will there be problems going from 4.4.4 to 4.4.2?
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I couldn't tell you, to be honest.
Make a Nandroid, and if the flash fails, or you encounter issues, restore your backup.

Ok thanks, the last time I made a backup and did a wipe for the phone, my backup also go deleted. Does it only do that on TWP?

ishred11 said:
Ok thanks, the last time I made a backup and did a wipe for the phone, my backup also go deleted. Does it only do that on TWP?
Click to expand...
Click to collapse
I use this recovery:
http://forum.xda-developers.com/showthread.php?t=2639583
I haven't used TWRP on this device, so I couldn't tell you with complete certainty. PhilZ's recovery has an option to clean your device for flashing a new ROM (wipes data, system, dalvik, & cache). SD contents will remain untouched.

OK thanks very much

G920f reflash without wipe

Hi.
I wanna get back in pokemon go and my only viable option seems to be reflashing stock as unrooting don't work.
I'm running rooted stock mm with twrp and supersu and wanna reflash stock mm but without wiping my apps/data.
Can this be done? Do I use odin/flashfire/flashify/something else?
Plz help
Tapatalked yah

joppz said:
Hi.
I wanna get back in pokemon go and my only viable option seems to be reflashing stock as unrooting don't work.
I'm running rooted stock mm with twrp and supersu and wanna reflash stock mm but without wiping my apps/data.
Can this be done? Do I use odin/flashfire/flashify/something else?
Plz help
Tapatalked yah
Click to expand...
Click to collapse
Hi
You would have to use odin to reflash and you would loose twrp aswell as root if you go to sammobile.com and look for your device you can flash it clean
REMEBER TO BACKUP MEDIA EVERYTHING WILL GO

Ive read numerous guides now stating that flashing stock image via odin will not wipe anything. Is this true?
I'm gonna reflash same version of tw to try to clean out root issues with PoGo but i wanna keep user data...