[Q] What's the best way to flash a kernel? - EVO 4G Q&A, Help & Troubleshooting

Yes yes, I'm quite a noob when it comes to this but I've heard so many ways of flashing a new kernel. So what's the way you flash it?
I've heard:
1. Wipe cache, dalvik, and battery stats and flash kernel.
2. Charge until full, wipe cache, battery stats, and flash kernel.
3. Wipe cache, battery stats, flash kernel, run battery to 0%, charge until 100% and turn phone on.
I'm currently using method 2 but all I really wanna know is if there is a "right" way to do this.

Really people do it different ways but to me its all the same .give your kernel like 2 days to get use to your phone and see the results
Sent from my PC36100 using XDA App

I always wipe cache and dalvik and then flash. I only ever wipe battery stats when flashing a new ROM and I always put a fully charged battery in after flashing but before the first boot.
Sent from my PC36100 using XDA App

Thanks guys. Yea I've always stuck to my way but I guess to each their own. I now have the sudden urge to flash something haha.

Related

Battery stats want reset!

I'm using android revolution 4.0. Its working perfect, but the time on how long the battery has been without charging will not reset either by charging or reboot. If I reboot into clockwork mode an reset battery stats it will, but then it hang again.
What will be erased by deleting dalvik cache, and is it a chance that will help?
Sent from my Desire HD using XDA App
garman76 said:
I'm using android revolution 4.0. Its working perfect, but the time on how long the battery has been without charging will not reset either by charging or reboot. If I reboot into clockwork mode an reset battery stats it will, but then it hang again.
What will be erased by deleting dalvik cache, and is it a chance that will help?
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
deleting dalvik cache wont help.. but that rom is in beta its not meant to work properr at this stage because its a leaked rom and dev's are working hard to make it stable in their releases... that rom is not for day to day use.

When to wipe cache and dalvik cache

Hello people!
Have searched the forums and also tried googling but have not found a certain, conclusive answer to my question.
The question is when do we have to wipe the cache and dalvik cache?
I know what to wipe when flashing a new ROM but what about radios, RILs and kernels? What do we have to wipe when flashing the above so as for the phone to run optimally? Before or after flashing them?
Thanks in advance
Developers of the rom will tell if a full wipe is needed , if your updating. If your coming from another rom, you need to perform a full wipe.
No wipe required when flashing radio, Ril and kernel.
If you are going to perform a wipe you do it before you flash anything.
Sent from my Desire HD using XDA App
AndriodLover said:
Developers of the rom will tell if a full wipe is needed , if your updating. If your coming from another rom, you need to perform a full wipe.
No wipe required when flashing radio, Ril and kernel.
If you are going to perform a wipe you do it before you flash anything.
Sent from my Desire HD using XDA App
Click to expand...
Click to collapse
You mean you don't even have to wipe battery stats when flashing a new Radio?
I thought otherwise but I am not certain...
Anyway, thanks for answering
As far as I know you don't need to, the only time bat sat are recommended to be wiped is when flashing a rom and you have battery issues. But others say wiping battery sat doesn't really help with battery..
Sent from my Desire HD using XDA App
Ok thanks for the info!

Wipe Battery Stats - possible?

Can we do a wipe battery stats with this phone via cwm ?
Yeah, Recovery Mode and under advanced, should give you the option to "Wipe Battery Stats."
kara mustafa said:
Can we do a wipe battery stats with this phone via cwm ?
Click to expand...
Click to collapse
Recovery Mode and under advanced as mentioned on the above post but make sure your battery is fully charged before doing so to get optimum life.
Is it possible to wipe the battery stats without rooting and installing cwm?
You can calibrate with batterycalibration app but need root.
Sent from my Galaxy Nexus using xda premium
qkumbers said:
Is it possible to wipe the battery stats without rooting and installing cwm?
Click to expand...
Click to collapse
If you are not rooted, means you haven't messed with stock rom, so in that case you don't really need battstat reset anyways ...
it's the same thing?
wipe battery stats via CWM and via battery calibration app? I've done it both way, but i'm not sure if it's the same result. In theory, yes. but in fact?
Battery stats will wipe only the info you seen when you go to settings > battery. Wiping batterystats will not calibrate battery. There was a post from android developer that this will not help or improve battery life. And on top of that battery stats are wiped every time when phone is charged 100%
Sent from my Galaxy Nexus using xda premium
Wiping the battery stats does nothing. It's just a myth. You can stop caring about it.
http://goo.gl/ePLIw
Written by Dianne Hackborn

Battery wipe in Recovery mode.

I have rooted my phone via a thread in XDA correctly. Flashed my ROM a few times. I can usually wipe most of the things, dalvik, cache, system whatever that is required before flashing a ROM. But I always have problem wiping my battery stats. It's like when you wipe your cache, the next thing that happens is "Wiping cache.... Wiping cache completed!" (something like that) but when I try to wipe my battery stats. Nothing happens.
Any ideas?
(BTW my battery life is crappy, 2 hours usage time only. Mobile data on + Facebook + WhatsApp.)
Don't start two threads: http://forum.xda-developers.com/showthread.php?t=2180026
Sent from my Desire HD using Tapatalk 2
NiCk.JaY said:
Don't start two threads: http://forum.xda-developers.com/showthread.php?t=2180026
Sent from my Desire HD using Tapatalk 2
Click to expand...
Click to collapse
I'm sorry. Forgot that there's an Q&A section. TY for the reply.

(Q) Phone Randomly Decided To Bootloop Today?

Ok I had purchased the ZL battery and have been using it since day 1, however today i got home around 11:25pm. i had put my phone on charge @ 3PM. I just finished my 3rd cycle for the battery so i'd figure its done charging as it indicated it was, and turn it on and now all of sudden constant bootloop out of nowhere.
What could have caused this? it was working just fine before i didn't change anything at all.
I'm Running Stock TW w/Saber Kernel. I had purchased the ZL battery a week ago and ever since no problems, nor did i flash anything at all. I've been on TW way before i even thought of buying the battery.
So what could have caused this to undergo a bootloop session.
I went into recovery and wiped dalvik and cache and still is doing a bootloop. Should i do a factory reset however i have no backup because i have been fine since and I've been on Stock TW figure this wouldn't happen.
This used to happen on my epic if I ever left the battery out too long. I always just reflashed either the rom or the kernel. Worst case scenario you just nandroid and restore data.
Sent from my SPH-L900 using Tapatalk 2
xopher.hunter said:
This used to happen on my epic if I ever left the battery out too long. I always just reflashed either the rom or the kernel. Worst case scenario you just nandroid and restore data.
Sent from my SPH-L900 using Tapatalk 2
Click to expand...
Click to collapse
my battery was on the charger in the phone not out at all.
Plus i just re-flashed the kernel still no luck it bootloops and i feel it vibrate and notice the blue led flicker once it restarts the bootlogo.
Factory reset still in bootloops WTF
XxLostSoulxX said:
my battery was on the charger in the phone not out at all.
Plus i just re-flashed the kernel still no luck it bootloops and i feel it vibrate and notice the blue led flicker once it restarts the bootlogo.
Factory reset still in bootloops WTF
Click to expand...
Click to collapse
Try going into Advanced then format system, data, cache, and dalvik cache.
Then swipe to confirm and repeat this 2 more times for a total of 3 Advanced wipes
If that still doesn't help then follow the same procedure but after performing an Advanced wipe 3x go into Format Data to format your internal storage.
Sent from my SGH-T999 using xda premium
LuigiBull23 said:
Try going into Advanced then format system, data, cache, and dalvik cache.
Then swipe to confirm and repeat this 2 more times for a total of 3 Advanced wipes
If that still doesn't help then follow the same procedure but after performing an Advanced wipe 3x go into Format Data to format your internal storage.
Sent from my SGH-T999 using xda premium
Click to expand...
Click to collapse
I just did the one click mc2 root restore stock
Sent from my SPH-L900 using xda app-developers app
Seems like you already did a full stock restore. I had the same symptoms, different rom tho. Reflashing the rom without wiping allowed me to boot up normally and with all of my data is intact. FYI for next time.
Sent from my SPH-L900
coiledwire said:
Seems like you already did a full stock restore. I had the same symptoms, different rom tho. Reflashing the rom without wiping allowed me to boot up normally and with all of my data is intact. FYI for next time.
Sent from my SPH-L900
Click to expand...
Click to collapse
I said I was on stock and had no nandroid of stock seeing how I shouldn't have needed one. But thanks for the info. I'll have to back it up today.
Sent from my SPH-L900 using xda app-developers app

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