This thread you did is awesome! Exactly what i was looking for to start off and has all what it takes to get to know how this "world" works. Really awesome job! I´ve hit the "thanks" button a couple of times.. LoL!
One question though! I´ve followed you intrutions by the book and i´m getting an error at the final step: flashing in CWM.
First time, i simply took the stock rom and used this tutorial to "rebuild" a custom stock rom with some apps i use on a regular basis and removed some junk and didnt need.
Also, i used your tutorial and a second one (How to port a miui rom) to try to combine both and do a port of the MIUI rom to my device. i crossed info from both and did the final zip.
On both the zip, using CWM i´ve got error 0!
I tried again and changed the files in the META folder, changed the update script to updater script (did it the first time) and back and nothing! using update script i get error 6, updater script, error 0. At some point i started to get "bad file" error in CWM but i was able to read the file with Winrar on the PC.
One thing i remembered is that, the stock rom for the device comes in .img files and a flashing aplication. They´re in EXT4 FS. Should i create a system.img of my new rom and flash it using the stock flashing application? If so.... how do i create the .img?
Once again, many thanks for this great thread!!
EDIT: One other thing, the device is a 7" tablet of a Spanish company. IT´s a BQ Maxwell Plus: CPU_RK3066 (Dual core @1.6Ghz), Q.Core Mali400, 1Gb RAM, 7" IPS