Cant find a clear.answer for this

nabilbek · 27th April 2012, 01:40 PM

Cant find a clear.answer for this

Not only for this.phone, i ve been working with androids for couple of.months, why do i sometimes lose data (apps contacts) and sometimes i dont when after flashing a rom ?

Sent from my SGH-T989 using xda premium

icenight89 · 27th April 2012, 02:08 PM

Because some roms wipe the data partition before they install, some don't, all depends on the dev who made it. That being said, u are SUPPOSED to do a factory reset and a system format in cwm before flashing any rom

nabilbek · 27th April 2012, 05:32 PM

Quote:

Originally Posted by icenight89

Because some roms wipe the data partition before they install, some don't, all depends on the dev who made it. That being said, u are SUPPOSED to do a factory reset and a system format in cwm before flashing any rom

Makes sence but for.example using sammobiles roms for example, there.shouldnt be a difference.right ?

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icenight89 · 27th April 2012, 05:33 PM

sammobile.com possess complete firmware images, but i don't believe they will actually wipe the data partition, i think they keep the data intact.

nabilbek · 28th April 2012, 11:17 AM

Quote:

Originally Posted by icenight89

sammobile.com possess complete firmware images, but i don't believe they will actually wipe the data partition, i think they keep the data intact.

Is it maybe cuz i flash newer versions and sometimes same version ?

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icenight89 · 28th April 2012, 02:25 PM

Using Odin to flash firmware is different from using cwm to flash roms.

AaronPauley · 30th April 2012, 04:21 AM

Stock roms are treated as updates. Unless you're updating to a new firmware base, aka 2.2 to 2.3, or 2.3.6 to 4.0.4, data is left in tact, and new system changes are flashed over the existing rom.

Updates changing the firmware base wipe everything before installing to ensure no incompatibility problems.

nabilbek · 30th April 2012, 07:24 PM

Quote:

Originally Posted by AaronPauley

Stock roms are treated as updates. Unless you're updating to a new firmware base, aka 2.2 to 2.3, or 2.3.6 to 4.0.4, data is left in tact, and new system changes are flashed over the existing rom.

Updates changing the firmware base wipe everything before installing to ensure no incompatibility problems.

thanks sir

was just awaiting for such a confirmation