I'm going to show you step by step how to download and install android for this models.
CMP-741e CMP-741x Craig tablet 7".
This Guide can be used for many other tablets/models that use PhoenixCard
Step 1
Download firmware:

Website : http://www.craigelectronics.com/site/
On the Product search, enter your model number and click on search.
Click on Details.
Scroll down until you see:
|
From this point Click on download and wait until its ready.
.
Step2:
Unzip files and save to anywhere, i prefer drive C:
(No pictures for this step is needed)
Step 3:
Very important!
Insert a MicroSd Card on the reader/port
Before you try to burn a card, disable any other card readers/Ports or "BURN" button will be disabled
or "Gray Turned"
Picture is just for reference !
From this point just choose ur Drive, Click Product, And burn :)
Everything its ready.
Step 4
Turn off ur tablet.
Step 5
Plug into power adapter
Step 6
Insert MicroSd Card in the tablet (One that just been burned)
Step 7
Wait until green bar fills and tablet reboot
Step 8
Remove MicroSd Card from tablet
Step 9
Turn back on the tablet
Step 10
enjoy!!! :)