Installing stock again

[Guest Jorku]

Hello,im trying to get back to stock from Android Revolution HD 7.1.0 ,but when i update with the oficial ruu : ''RUU_ENDEAVOR_U_ICS_40_HTC_Europe_1.29.401.7_Radio_1.1204.104.14_release_259281_signed'' it doesnt let me.Any ideas what i should do ?

PS:If i manage to install it again,will i get the official updates ?