Please read message fully, good news is it was extremely simple. i have attached links to original forum on vodafone (since mine is vodafone version as mentioned above).
MOST IMP: EVEN AFTER upgrade , I DONT have Cy..mod ROM or so called "custom ROM", all i have is 2.3.4. That's what i wanted.
After reading thread again and found that my nexus phone might be vodafone version, i searched for any clues. I found that vodafone version is raodblock for getting me OTA update.
I found a vodafone forum, where there were 2 links to big downloads ~85-90MB.
First one by posted by moderator, is to upgrade to FRG83 (not sure what that means) and 2nd one he says directly upgrades to GRJ22 (not sure what that means either).
Link for discussion,
My Nexus One - will it update to Gingerbread? - Vodafone eForum
Link for older version ( It would upgrade to, FRG83 and then you again have to upgrade to 2.3.4 manually or OTA)
Rusty : 01-03-2011 04:02 PM - last edited on 01-03-2011 04:03 PM
Link for newest version ( I used this one, file name says GRJ22.)
Look for RustY message,
"New passimg to go straight to GRJ22: http://shipped-roms.com/download.php?&model=Passion%20(Nexus%20One)&file=PASSIMG_Passion_Google_WWE_..."
ON
Re: Easy (no root) Gingerbread Update for all Nexu... - Page 3 - Vodafone eForum
STEP 1. With heartbeat over 500/s, I tried 2nd link (GRJ22) and renamed file to passimg (no .zip, since on my XP PC, .zip ext did not show). I attached USB cable to phone and PC, turned on as file sync allowed thingy and copied "passimg" to send to D drive (phone sd card is showing as D on my PC).
STEP 2. Disconneted the USB and restarted phone. It AUTOMATICALLY starting reading passimg.xxx (error no image), then AUTOMATICALLY went to another passimg.xxx(still error no image) and finally to passimg.zip.
STEP 3. I then saw a vertical blue bar on top right, filling up slowly.
When blue bar went 100% blue, I saw 2 options, restart YES or NO.
STEP 4. I selected YES and then phone restarted, though took 5 sec extra. and on restart, It started with Android toy thing asking me to setup my phone.
(This was exactly same as yesterday when I got my phone and started first time and followed setup as guided)
STEP 5. I saw different and some new Icons in applications window. Immediately checked my OS from phone setting and WOOOOOOOOOOW, it said 2.3.4. I don't anymore need to take any risk ever again.
Please ask any questions, though I am sure it would be exactly straightforward for you too.
Thanks.