Knox Posted December 15, 2021 Report Share Posted December 15, 2021 Hello, while I'm upgrading the firmware my customer's evo8+ plugin ecu stuck at boot mode. When I try to reinstall firmware, after installing writing comes on "switch off the ignition and on again and push OK" I make it but this error comes to the screen. When I press enter laptop and ecu connection lost completely. After I disconnect all sockets from ecu and connect again, laptop connects to ecu but writing comes on says ecu is in boot mode, reinstall firmware and same thing happens again. Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Adamw Posted December 15, 2021 Report Share Posted December 15, 2021 This means the ecu is not shutting off when you do the power cycle. Possibly a back feed keeping it partially powered up. Try the firmware update again, but this time when you get to the power cycle step completely disconnect the battery or unplug the ecu for a few seconds before clicking ok. Quote Link to comment Share on other sites More sharing options...
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