I installed the Release Candidate of the last firmware (I saw it on a russian forum) a couple of days ago.
Indeed the procedure to activate the market (https://www.mobileread.com/forums/sho...d.php?t=128178
) doesn't work anymore.
But I tried to use the old method: http://blog.the-ebook-reader.com/201...ps-on-sd-card/
Ok it's not so easy but it worked on my IQ
Warning: If you are running on 2.0.6, upload the soft: sqlite3 from your rom and backup it, because I didn't found it on the new one. (You'll have to use it to modify something on your device)
Good Luck and Have fun...
PS: Another "market" can be easily installed on the IQ: Aptoide
Get the aptoide Repo: http://www.mediafire.com/?gbjn15n5u6hl0ko
Lauch it, ask to download aptoide and the update the repository... Works very fine