retrofit

verb
1
to put a new piece of equipment into a machine that did not have it when it was built; to provide a machine with a new part, etc.
بازکاری کردن, تجهیز کردن مجدد, اضافه کردن قطعه جدید, مجهز کردن
noun
1
an act of putting a new piece of equipment into a machine that did not have it when it was built
تجهیز مجدد, باز تجهیز, تجهیز به سیستم جدید