Just got my x7 and would like to upgrade firmware  from original 01.00.0135 to current or newest firmware.
Do i need to install previous firmware like 01.01.0200 then the current firmware?

Update only via the assistant 2 software (Win / Mac).
Ac first without X7 gimbal attached to latest > .0300
Then same update with X7 connected.

To ensure optimal performance of the Zenmuse X7, we suggest you update your Inspire 2 to this latest firmware version via DJI Assistant 2 on your computer. Alternatively, you can update it on your mobile device with an internet connection.