That is correct ¨C you only need the PIC programmer to update the servo firmware.?? It has to be said that this recommended even if you aren¡¯t proposing to exploit the x4 mode as it contains a number of fixes for long standing bugs.
Also it appears that for the L6 upgrade the PIC programmer is only needed to update the firmware of the motors, is that correct? All other components can be updated without a PIC programmer?