I use version 6.439
This will also install EDC ver 7.0.3 as long as you install both vcredist files before you install aloha.
If you run into an issue during your upgrade reach out to me, I have done over 20 of them in the past 2 months.
Couple things to make installation easier
Do all this before you install
1. make bootdrv\aloha
2. Copy your data and newdata folders over. Delete all the .log files from the data folder.
3. Turn off simple file sharing and then share the folder
4. After upgrade and reboot, go to the bin folder and run dbconfig, upgrade both newdata to newdata and then newdata to data. Then start aloha manager
5. Depending on who you process CC with there may be some changes needed to your edc.ini file
For the front of the house I suggest leaving each computer on the windows desktop. Have VNC or UNVC installed on each terminal. This will keep you from walking all over the restaurant getting terminals up.
Do not attempt an upgrade while you have people on the clock. Learned the hard way on that one.
Good Luck
AlohaRoss