Since you shared dev keys, can you outline how to gain ssh access & rebuild the platform?

[MAVProxyUser]

Thanks for these...

./meta-mediatek-mt7688/recipes-secureboot/development-keys/
./meta-mediatek-mt7688/recipes-secureboot/development-keys//opensource-keys-native.bb
./meta-mediatek-mt7688/recipes-secureboot/development-keys//files
./meta-mediatek-mt7688/recipes-secureboot/development-keys//files/keys
./meta-mediatek-mt7688/recipes-secureboot/development-keys//files/keys/C3OpenSource-TrustSigningKey.pri.key
./meta-mediatek-mt7688/recipes-secureboot/development-keys//files/keys/C3OpenSource-CodeSigningKey.pri.key
./meta-mediatek-mt7688/recipes-secureboot/development-keys//files/keys/C3OpenSource-TrustSigningKey.pub.key
./meta-mediatek-mt7688/recipes-secureboot/development-keys//files/keys/C3OpenSource-CodeSigningKey.pub.key
./meta-mediatek-mt7688/recipes-bsp/u-boot/u-boot-mediatek/sundial/sundial_env.base:# (attempt to) add the TrustSigningKey from flash at address 0x9c0e0000.
./meta-mediatek-mt7688/recipes-bsp/u-boot/u-boot/sundial_env.base:# (attempt to) add the TrustSigningKey from flash at address 0x9c0e0000.
./meta-irobot-mt/recipes-core/initscripts/initscripts/overlay.sh:setup_devmode()
./meta-irobot-mt/recipes-support/swupdate/swupdate/ota_install.sh:  provision --devmode disabled

Can you help us understand how they work to enable development mode on the Create 3 now?

./meta-irobot-common/recipes-support/provision/provision/provision.sh:# configure development mode
./meta-irobot-common/recipes-support/provision/provision/provision.sh:     echo "Error: This is not a valid development mode: $1"
./meta-irobot-common/recipes-support/provision/provision/provision.sh:   echo " --devmode <mode>               - development mode (disabled/enabled)"

[ia74]

Hey there! You can simply edit /opt/irobot/config/provisioning and change these:

SYSTEM_ACCESS="locked"
SDL_ACCESS="disabled"
DEV_MODE="disabled"

Not sure what it is, but for documentation "SDL" means SD Logger
This is how it works on my i7. Not sure about Create 3 though, but should be similar.