How to choose which version of CyanogenMod to install

First of all if you don't know what CyanogenMod is, you should check out the FAQ page or the official CyanogenMod site. 

There are currently two main CyanogenMod ports available for this type of phone (Orange Stockholm), the first one, called CyanogenMod 7 is based on Android 2.3 Gingerbread, and the second one called CyanogenMod 9 and is based on Android 4.0 (the newest edition of Android OS) also known as Ice Cream Sandwich (ICS).

These both are unofficial custom ROMs based specifically developed for Huawei U8180 by the user community of CyanogenMod and [XDA]/MadTeam, centred around user subpsyke, main developer.

CyanogenMod 7 Homescreen 1

CyanogenMod 7 Homescreen 2

Cm 7 was ported for Huawei U8160 first, because official Cm support was not available for other Huawei phones except Huawei U8220 (which is still the only officialy supported device); thanks to the fact that there is not much difference between U8160 and U8180 the attempt to port this version from the first type of phone to the latter was done without any difficulty, thank God.

CyanogenMod 9

CyanogenMod 9 Homescreen

While they both are available for download and installation on your Stockholm I do not recommend using CyanogenMod 9 yet, because of the fact that it is still in development and not suitable for daily use. (phone calls can not be initiated or received and so on) Hopefully in the close future this version will be successfully developed into a stable state.

Stock ROM for Huawei

By following this tutorial you can reset your phone into to state it was when you purchased it, installing the Official Huawei ROM. It resets everything, so PLEASE BACKUP EVERY SENSITIVE DATA YOU HAVE ON THE PHONE!

Procedure: 

1st Step: Download the stock ROM from this link. There is also a guide in the download if you find this hard to follow.(This ROM is from the Australian telecommunications company called Optus, it will not block your phone to this operator) 
 
2nd Step: Format your SD card into FAT32 ( if unsure, it is best you leave it the way it is)
 
3rd Step: Create a folder "dload" on to the root of your SD card.
 
4th Step: Extract the UPDATE.APP from the stock ROM and place it in "dload"
 
5th Step: Power off your phone with SD card inside.
 
6th Step: Power on by pressing Volume Up+Volume Down+Power Buttons; if done properly you will see a progress bar saying UPDATING. After it's done it will reboot automatically. Your phone will be good as new! (Hopefully more vendors will be added)