Database Develop

[Q] SpeedMod update issue

Dear all,
I start using SpeedMod since version K12K.
There is no problem when I update the kernel from K12K to K12L, K12M, K12P, until from K12P to K12Q and so on.
After flashing with Odin and reboot, the phone becomes very slow, both in operation and the touch screen response.
I have tried updating from K12P to K12Q, K12R and K12S, they have the same symptom and slow. When I flash back to K12L or K12P, it becomes normal.
Any advises please?
Thanks in advance.
My phone info:
ROM: Stock 2.2 FROYO.ZSJPE

Maybe you should wipe the dalvik cache and cache. Go to recovery mode - clockworkmod options - wipe dalvik cache. do the same with cache partition.
Then reboot. That first reboot will take longer than usual because the dalvik cache has to be rebuild again. After that everything should be fine.

Thanks for your reply.
I have tried wiping the cache, then the dalvik cache, but it seems remain the same --- slow and lag. I would like to know if there is any sequence, let's say wipe the cache first, then wipe the dalvik cache, then flash the phone? or something else?
After wiping the cache, in general speaking, how long do I have to wait after the reboot?
Thanks in advance.
Sent from my GT-I9000 using XDA App

What i mean is that the first reboot after wiping the dalvik cache takes longer than usual because the dalvik cache has to be rebuild again.
You might check in the task manager if there's any running process cunsuming cpu time, which could lead to laginess. There are many things that could produce lags (widgets,apps etc.) I dont know what's installed on your phone.
Sent from my hand

I see. However, I am thinking if the lag is because of the apps. Since I am using the same apps before and after the kernel update. I did wipe the dalvik cache after flash, but after reboot, the phone response very slow, and whenever I click the home button, it just did not show up.
Any more ideas? Thanks a lot.
Sent from my GT-I9000 using XDA App

What i would do in your case would be:
Backup all important data/apps etc.
Then do a complete wipe and reset to factory defaults.
Then flash the latest firmware: froyo 2.2.1
Then flash speedmod kernel and apply all recommended tweaks.
After that restore app by app and rethink the real use of each app (do you really need/use it?).
Might sound complicated but it might be even easier than loosing more time on hopeless attempts to solve the problem...
Sent from my hand

Cheers man, this will be my last step. Thank you for your help.
Sent from my GT-I9000 using XDA App

NP Tell us if you succeeded. You might want to try wiping thumbnail database before (forgot to mention that beforehands).
Sent from my hand

Just done a factory reset (erase data + data cache + dalvik cache)
and flash the new version of kernel. The phone is back to normal now.
Sent from my GT-I9000 using XDA App

Wipe, non wipe and factory reset

Some rom guides tell you to wipe data/factory reset after you have.flashed the rom but wouldn't this put your phone back to stock firmware?
What is non wipe and wipe because I have tried both and they wipe everything.
Sent from my GT-I9000 using XDA App

You can find Wipe- and Non-Wipe versions on some ROMs. So you can choose if everything should be wiped or not.
Factory reset = removing all user data
Sent from my GT-I9000 using XDA Premium App

If you are updating same rom then generally you can use non wipe version, if you are coming from a different rom then use wipe to avoid data conflict
Insanity cm017/glitch v10c

seeraj15 said:
Some rom guides tell you to wipe data/factory reset after you have.flashed the rom but wouldn't this put your phone back to stock firmware?
Click to expand...
Click to collapse
Wiping after flashing won't put your phone back to stock but may put it into a bootloop. Most instructions say wipe data before flashing, this will prevent any compatibility errors you may have with an old rom or version. Just remember to backup in case things go wrong.

Sprint's Hard Reset + Nandroid

So, I took my phone into Sprint because all of a sudden I wasn't getting text messages, and my phone decided it always wanted to be on speaker.
They did their hard reset, and now I just want to know if it's alright to use my old nandroid backup, or should I install and change everything from scratch?

You should be fine. Just remember to wipe your data, system, cache, dalvik, and boot partitions with your recovery before restoring the nandroid.
Sent from my HERO200 using XDA App

[Q] Why clear Dalvik and cache?

So every single rom for any phone I've seen says to clear the dalvik and the cache (or maybe its just the "dalvik cache") but when I went from stock to Thriller, I forgot to, and nothing went wrong. In fact, all my settings and apps were all intact from the previous stock rom.
I've considered that the only other phone I'd done any flashing on was a backflip, without Apps2SD and maybe that's why all my apps and settings were intact, so that still leaves me with the question: why clear it?
This may be a noob-ish question, and I apologize. Thanks for any help!

Tyqar said:
So every single rom for any phone I've seen says to clear the dalvik and the cache (or maybe its just the "dalvik cache") but when I went from stock to Thriller, I forgot to, and nothing went wrong. In fact, all my settings and apps were all intact from the previous stock rom.
I've considered that the only other phone I'd done any flashing on was a backflip, without Apps2SD and maybe that's why all my apps and settings were intact, so that still leaves me with the question: why clear it?
This may be a noob-ish question, and I apologize. Thanks for any help!
Click to expand...
Click to collapse
If there are any compatibility issues between the apk dalvik cache of your previous rom and the apks on the new rom wiping dalvik clears the previous apks stored dalvik cache. In most cases you can flash without a problem. But I recommend wiping between rom flashes just to eliminate any potential problems. Flashing something like Thriller over the stock rom you can probably get away with not wiping anything since all the apks are essentially the same. Flashing kernels you don't need to wipe anything. When flashing a rom with a completely different firmware I recommend a full data wipe. Restoring recovery backups such as nandroid require no wiping at all.
Also, wiping dalvik shouldn't affect any of your settings.
Sent from my LG-P920 using Tapatalk

+1
When switching ROM with different base apps, it is generally better to wipe caches than to get stuck in a boot loop, or having your apps and launcher FC on you. You never lose anything as the cache rebuilds itself on the next reboot, except maybe a few minutes
CallMeAria said:
If there are any compatibility issues between the apk dalvik cache of your previous rom and the apks on the new rom wiping dalvik clears the previous apks stored dalvik cache. In most cases you can flash without a problem. But I recommend wiping between rom flashes just to eliminate any potential problems. Flashing something like Thriller over the stock rom you can probably get away with not wiping anything since all the apks are essentially the same. Flashing kernels you don't need to wipe anything. When flashing a rom with a completely different firmware I recommend a full data wipe. Restoring recovery backups such as nandroid require no wiping at all.
Also, wiping dalvik shouldn't affect any of your settings.
Sent from my LG-P920 using Tapatalk
Click to expand...
Click to collapse

so, when i flashed thriller and followed the instructions, did I do a full wipe or not?
I mean if it doest it on its own, and if not, should I do one?

latinohot said:
so, when i flashed thriller and followed the instructions, did I do a full wipe or not?
I mean if it doest it on its own, and if not, should I do one?
Click to expand...
Click to collapse
If you followed the instructions you did a full data wipe. When you do this the dalvik gets wiped as well. To just wipe dalvik look under the Advanced menu in cwm recovery.
Sent from my LG-P920 using Tapatalk

clearing cache
i am using a nand rom in my HD2, and i also want to install another rom via SD in Magldr, but because of kernel issues i cannot load the Rom from SD unless i use the kernal i am advised to use. I am instructed to clear the dalvik and cache, but does this mean that i would lose anything from my current NAND rom? I still want to be able to use that of coarse so i just want to make sure there are no major risks when clearing cache.

ssj5legend said:
i am using a nand rom in my HD2, and i also want to install another rom via SD in Magldr, but because of kernel issues i cannot load the Rom from SD unless i use the kernal i am advised to use. I am instructed to clear the dalvik and cache, but does this mean that i would lose anything from my current NAND rom? I still want to be able to use that of coarse so i just want to make sure there are no major risks when clearing cache.
Click to expand...
Click to collapse
Clearing dalvik and cache wont make you lose anything, used to do it with my shift because I'd flash about 10 zips a day sometimes...
Also when it comes to flashing any ROM I format system data cache wipe dalvik cache and do a factory reset just to be sure nothing from a previous ROM is left over also wipe my SD ext partition when running an a2sd ROM, my question is can I safely manually format the emmc partition of the thrill from the mounts and storage option of cwm
Sent from my LG-P925 using Tapatalk

Full wipe with Nandroid Backup

I have the following problem:
I have RocketROM v12 - ICS - 4.0.4 - XXLRT.
After I put my new simcard in the Galaxy Note, my Galaxy Note went in bootloop.
I can boot in CWM and download.
I have an older Nandroid backup and I did a new Nandroid backup without any problem.
On my internal SD-card I still have the above described ROM.
After re-installing the ROM I still have the problem with bootloop.
What is the best way to get out of the bootloop without losing my Nandroid Backup?

Have you done wipes of dalvik and cache? Do those first, see if it still remains.
Sent from my GT-N7000 using xda premium

may be do a wipe cache and dalvik.. and check.. if no go then do a factory reset from cwm

SpyderTracks said:
Have you done wipes of dalvik and cache? Do those first, see if it still remains.
Sent from my GT-N7000 using xda premium
Click to expand...
Click to collapse
nokiamodeln91 said:
may be do a wipe cache and dalvik.. and check.. if no go then do a factory reset from cwm
Click to expand...
Click to collapse
Thanks. I did wipe cache and dalvik, and the bootloop still remains.
If I do a factory reset, will I lose my Nandroid Backups?

no ur internal and external memory will be untouched

Thanks for all.
I am out of bootloop without lost of backup

Wow