i guess im stuck having to downgrade to 4.1.1
and i tried to use version 7 to unlock it, but it wouldnt even let me get past the agreement part.
It's not that bad to downgrade, If you want to try again with v7on JB 4.2.1, do a factory reset then give it another try, otherwise downgrade:
1. download full Asus JB.25 from Asus website, then unzip the downloaded .zip file (it will be another .zip)
2. Rename the new zip to EP201_768_SDUPDATE.zip
3. Format FAT32 the MicroSD card that you will be using for the update process
4. Copy the file to (the root directory of) your MicroSD
5. Insert it into the tablet
6. Shutdown (power off) the tablet
7. Power it on by pressing and holding VOLUME DOWN and POWER buttons simultaneously
8. When you see white text in the top left corner of the screen, release the buttons ^^ and press VOLUME UP button twice and upgrade process should start by itself.
9. Wait patiently for 10 minutes or so and Done.