[Nexus S Q&A, Help & Troubleshooting] TuBig:
Hi! I realise this if my first post I'd like to tread lightly; but I'm about 4 days into solving my issues and I just want to finish it...

I've had my Nexus i9020a (bought from Koodo) since ~May 2012. I upgraded to ICS sometime in the summer and sometime in the last few weeks it has started rebooting. I hadn't been installing new apps, etc. I'm not sure what the cause is. I 'Factory Reset' today in an attempt to resolve the issue, thinking it may be a program gone AWOL; but it has rebooted a few times since. I *just* looked through rebooting FAQ on this site and have edited the first few features listed there. I'm not sure if it has worked yet, but I'll get back to you on that. For the record, the only programs I have installed now are Swiftkey 3, Handcent and Beats (DDR simulator, updated in November).

In the meantime, before I found the solutions here, I decided to take another shot at unlocking the bootloader and try installing... probably CyanogenMod.

Specs: Windows 7 64 bit with Nexus S I9020a (Koodo) running 4.0.4 (4.1.1/2 OTA haven't come through, despite dozens of attempts at clearing the GSF cache, etc)

So I've been using the Nexus S: Full Update Guide found at:

hxxp://wiki.cyanogenmod.org/wiki/Nexus_S:_Full_Update_Guide

(It won't let me post the link)

I've followed the guide for installing the Android SDK, gone to CMD and typed 'adb devices' and had it show up. Theoretically, the SDK should be running fine.

Next, I turned on the USB debug mode. Then I booted up the bootloader, plugged the NS into the PC... and despite not having issue when the it's turned on (driver installed properly) windows says drivers have not been found for the device. Thus, when I type fastboot devices, it comes up with nothing.

I've been, and will continue perusing forums for this, but so far I haven't seen anyone with this specific problem.

Edit: I have also gone to the directory with fastboot/adb and used cmd to reboot into the bootloader, only to have windows 'ding ding ding' an unrecognised device.

2nd Edit.

I've gotten a stage further! I'll keep the thread open because I may come across something and it's nice to write my issues down. Seems my head can wrap around the problem a bit better. Anyway, I installed PDAnet and BAM, it works. Onto getting CWM installed! Thanks for the, uh, help!

3rd Edit.

CyanogenMod 10.0 stable is booting for the first time!! It's taking a while... but I appear to be on the home stretch! Also, my phone didn't reboot for a few hours before I installed CM. So if I don't end up somehow bricking it... and I mean, this first boot is taking a heck of a long time... The animation sets me at least a bit at ease... maybe 4.0.4 will work out...

Edit 4

I forgot to clear the app and cache data before flashing the ROM to the phone and thus the issue... after a VERY tension filled moment of pulling the battery during first boot... I rebooted, cleared said data and reflashed the ROM. After a boot, I realised I forgot the GAPPS zip and fixed that. Now I'm running CM10 Stable!! I'm stoked that after months of putting it off cuz last time I did it I didn't get anywhere after many days, but now it's done!! Thanks again for such an awesome site!