Is it safe to upgrade my Motorola android phone?
Using this method:



http://www.gadgetindia.info/install-...ola-defy-plus/

Depends on your definition of "safe". If you don't follow the instructions closely, it's very possible you could mess up the phone. Android does have pretty good recovery capabilities, but that also assumes you know what you're doing.

Keep in mind that community developed versions of Android like Cyanogenmod are generally not as stable as the manufacturer-supplied ROM (especially on a phone like this). Also, I would look for a guide that is for a newer version of Android. Going through that trouble just to get to the outdated 4.0.4 seems pretty silly.

The link is not dead, you can get it from here
http://quarx2k.ru/

You can choose the latest Jelly Bean or ICS.

If the upgrade fails, can I reset to original firmware of ginger bread 2.6.7 ?

Choose the latest one
http://quarx2k.ru/cm10.1-nightly-defy+/2.6.32/

or

the old one

http://quarx2k.ru/archive/cm9-nightly-defy+/

I bought the Motorola Defy + for my wife, it is cheap,
we are not rich,
so buy a cheap one but with acceptable specs.

Probably depends mostly on whether you want to run modern software on it, or just use it as, y'know, a phone.

"Is it safe to?" might be, "what is your motivation to?"

I got off the Apple band-wagon several years ago, and we're both happily using phones that would probably be considered old-fashioned .. automatic updates are turned off .. and after several years they're still doing exactly what we want: making phone calls, and running the geocaching and Munzee applications. Never bothered to try to dive into the innards of the system.

will the upgrade cause my phone to be damaged and can not be recovered?

Yes, a botched upgrade of a rooted device can brick it. If you've flashed the original rom and are able to boot in recovery mode you can reinstall the original rom, you're ok, otherwise it's gone for good.

The guys at the XDA developer forum might know a trick or two.

My general rule of thumb is that if you can't take risks don't take risks.

Can I just try to boot into Recovery mode but do nothing.
I haven't done that yet,
I am not sure my phone is rooted?

If you don't know if your phone is rooted, then it isn't.

My phone is not rooted,
I follow the instruction but could not enter recovery mode.

Hi friend thanks for sharing...........

I feel frustrated

I use super-one-click, also can not root it.