Foxflash user feedback:
Citroën jumper 3 2021
Stage 1
Dcm7.1a
Boot mode
Read/write ok
Checksum by foxflash perfectly
Only one difficulty find & reach the pin boot under the processor but with good eye its ok.
Check DCM7.1A/B boot mode pinout here
http://www.pcmtuner.org/foxflash-read-and-write-citroen-jumper-dcm7-1b/