Flashing EBB42 v1.2 via DFU

[solar pelican]

Hello,
I just received a usb c/a cable and my ebb42 v1.2.
I connected the ebb42 to my raspberry pi4 via usb.
I connected the ebb42 with CAN(gnd+vin) to my psu with a wago (24v).
But I don't have an LED to turn on, and my DFU not detected
if anyone can help me

my usb cable : https://www.amazon.fr/Amazon-Basics-certifié-transfert-données/dp/B07D7S93DD/ref=sr_1_11?crid=3A4U35EHNS7T8&dib=eyJ2IjoiMSJ9.3nfQ16Ycva0C-tZlr339ti4mJCja78PpIZAEewIp0hT646f0gORl4RkG1_0gdAtQOS7gvhQWtQysUxdYXEvCEBDJuM_WY_9CXdj3CvlyRxD1qcivI4O38FaJSzEhboxIfErZG2iZVHtnbov8juGU8f73n2Ikx2fhE5Seu1qWiSxCeL2jgA5IksbvlhLP5ZneHma5uA7nftWTBeCGYvEvUSu9Y-jO0GOnazOLk2FuAJUZKB6tp3tm3fAzkkv6JtQN8FWVkQY8YQ3U0yGu6cTJ7tABDsm0tNrofPNlleGnmNk.ELS4fBoUgB3k9G3cBe0W6l74rdOuHCPV7FWqC_nWn-A&dib_tag=se&keywords=cable+usb+c+vers+usb+c+amazon+basics&qid=1712828536&sprefix=usb+c+vers+usb+ama%2Caps%2C84&sr=8-11

[summer jewel]

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