Another word for an 'upgrade old version to new'
Solution 1:
Consider retrofitted.
retrofit
- To substitute new or modernized parts or systems for older equipment
- To provide (a jet, automobile, computer, or factory, for example) with parts, devices, or equipment not in existence or available at the time of original manufacture.
Solution 2:
Try old technology revamped.
Solution 3:
For the specific instance you're asking about, you may want something less specific and more flashy. Perhaps reimagining.
... the reimagining of [old technology type]