I am wondering how to backup our current OS be4 even flashing our BB?

I might want my older OS just in case the new 1 give me troubles.

Anyway, i found out that digi has their own OS upgrades which i am not wrong is 5.0.6xx. Currently downloading it and will try tomorrow if i am able to backup my current OS.

Please advice.

I bought my set from t-mobile . if i flash mine with the current digi one, i don't think i am able to flash back to my current OS from t-mobile.

If anything get's wrong , then i still can flash them back.

Seriously i need help from some1. I tried upgrading my OS today.

I downloaded "9700EastAsia_PBr5.0.0_rel680_PL5.1.0.116_A5.0.0.423_Bell_Mobility_Inc " to upgrade my OS to .423 . I tried following the guides here and http://crackberry.com/blackberry-101-how-i...ating-system-os but still i couldn't understand how to use the loader.exe or even the DM.

Can some1 teach me how to upgrade them using the loader.exe? i couldn't understand anything from it.

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Added on February 28, 2010, 9:37 pmOkay, at last i manage to upgrade my OS to .423 . But seems i have this problem , when i connect my BB to DM. The DM said that i have a newer version of OS and ask me would i like to downgrade my OS . Of course i press no, but in the later i couldn't check my available app in my BB. Any1 can help me on this?

Many thanks

This post has been edited by richard3200: Feb 28 2010, 09:37 PM