Default Nook HD - Universal Boot x CM 10.2

Bought Nook HD 16GB with firmware 2.1 - create CWM 6027 bootable SD, add Universal Boot rev zip file.

Boot from SD, run Backup, wipe data / factory reset, install Universal boot zip file, reboot.

Remote SD from Nook, run through Universal Boot sequence, Nook load files up to 99%, press "n" nook key, make Zeam launcher the default, Nook reboots, prompts to register again.

Q1 - What does Unversal Boot zip file contains?

Q2. What version of CM does Universal boot it installed or upgrade to (i.e 10.2?)

Q2a. What feature do I get instead install Universal boot, install CM 10.2?

Q3. Do I need to install file after I install Universal boot?

Q4. to load back original 2.1 firmware - just boot from SD, install NookHD-factory-2.1.0-plain-stock

Q5. during Universal boot sequence, i did not put stock home on Zeam, how can I add stock home on Zeam.

Thank in advance for your help