http://forum.xda-developers.com/showthread.php?t=1201233
In here I’m upgrade from SDCard so download Supreme Sense v9.1 a2sd
1. Shutdown HTC Evo Shift 4G
2. Press Power + Volume Down
3. Select Recovery <Press Power to Select Item>
4. I always Backup before upgrade
5. After Backup, I’m backup SDCard to PC. Please provide the cable and connect to PC
From Handphone, Select Mounts and Storage > Mount USB Storage. Now, you can copy All Data in SDCard to PC, after that select Unmount > Go Back.
6. Select Advanced > Partition > Ext Size Minimum 512M and Swap 0.
7. Now, copy Supreme Sense v9.1 a2sd to SDCard like copy from SDCard to PC.
8. After copy, Select zip from SDCard > Choose zip from SDCard Supreme_Sense_v9.1_a2sd.zip, waiting process installation if finished select Reboot System Now.
CMIIW, Thanks 