Upgrade ??
How would that improve on the original equipment?
verb
verb: upgrade; 3rd person present: upgrades; past tense: upgraded; past participle: upgraded; gerund or present participle: upgrading
/ʌpˈɡreɪd/
raise (something) to a higher standard, in particular improve (equipment or machinery) by adding or replacing components.
"the cost of upgrading each workstation is around £300"
As an assembler of Multi-rotor craft such as SK450 with GPS / Compass / programmed flight etc. - I wonder how you would replace the Compass and GPS items on a DJI ? Considering that the Flight Controller is proprietary DJI and not like a Betaflight etc.