[Q] Is it good to wipe dalvik's cache before flashing new rom?

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As you all know, before installing new rom we we have to wipe data and cache in recovery...

But do we have also to wipe dalvik's cache?

As you read on every ROM thread, it is advisable to do a CLEAN wipe meaning all of it before installing a different rom. I personally don't find any difference between wiping and not wiping.

When upgrading CyanogenMOD nightlies wiping is pointless, and a waste of time. When switching between Sense-based ROMs and CM etc. then a full wipe is recommended, but not always needed. Wiping dalvik cache will never hurt

Just a thought here, but isn't DC in /data ? So if you wipe data you wipe DC as well, no?

I've been flashing Mdj Droid L2.1.110210 rom but the only thing I am seeing is the HTC screen for over 10 minutes. Is there anybody helps me to solve this issue? I am newbie so I cannot post in Mdj Droid L2.1.110210 topic.

Thank

I always wipe because it cleans the dust. As GrammarFreak said, when switching between CM nightlies, it is pointless as of the minor changes that come with them. But switching to an entirely new ROM (like stock -> CM) I thin it is better to wipe everything. The cause: Android DO collect junk, and a clean system is always nice.
Regarding contact, sms and other app data: backup to phone and cloud, simple as hell.

thanks for the advice. so if you flash anew rom, do u lose all ur apps every time? i'm flashing ics on my g2 alpha 8 right now. so i will find out soon enough:P

Originally Posted by shinobi3432

thanks for the advice. so if you flash anew rom, do u lose all ur apps every time? i'm flashing ics on my g2 alpha 8 right now. so i will find out soon enough:P

In my experience (using a HTC Desire HD) you only lose your apps and settings when you perform a full-wipe before flashing a new rom. When you update your rom without wiping, your settings and apps are not removed. However, I personally like to do a full-wipe before flashing a rom, because it clears out al the dust and gives you a fresh new phone.

If you don't want to lose your apps and data, but you do want to wipe, you can offcourse always use Titanium Backup to make a backup of the apps and data.

Just do it! It's free (costs only a slightly longer startup the first time after you wipe dalvik)!

Originally Posted by aiuvoanh

I've been flashing Mdj Droid L2.1.110210 rom but the only thing I am seeing is the HTC screen for over 10 minutes. Is there anybody helps me to solve this issue? I am newbie so I cannot post in Mdj Droid L2.1.110210 topic.

Thank

in my experience, this happens when you dont clear the cache prior to updating the rom. in my case, I had to re-apx mine, since I didnt figure this out until I had tried the factory rom. good thing I had the SBK and CPUid, or it would have been even a more painful experience!