Installing Shop for 1.9.2

[tenorishe]

Hi!
Our site has the SMCMS version 1.9.2
It is necessary to make Internet shop on its base.
I have read that the following modules are for this purpose necessary:
Products
Cart
Orders

I have already Module Products with descriptions of the goods.
I installed 2 missing modules, but they don't work, the CMS upgrade required. I updated it to version 1.10.3
Actually i only begun updating, on 6 step i got an empty window . updating is stopped. maybe the reason was incompatibility of modules.

All right, I recovered backup, disconnected all modules and updated CMS without problems. Then activated all modules back and installed in addition Cart and Orders moduls. The system has asked me to update also "products" to the new version. I did it.

Then i discovered that there is no more products in "products menagement" window. So i have to add now each product mannually! Not the best and fastest way! But it is not all. some entries in the database now have the coding latin1_swedish_ci instead utf_8 general_ci (the site is in russian)
I don't understand where it came from. Probably automatic installation of modules is incorrect.

so much problems that i want now only one thing: to recover backup and to add older versions of modules cart and orders that don't demand CMS updating.

Answer please, what numbers of versions of these modules (cart and orders) are compatible to SMCMS version 1.9.2?