Onyx Boox C67ML carta2 does not start after new firmware

Hi i bought a Onyx boox c67 ml carta 2. After updated yesterday to firmware 1.82 from you international site the e-reader was stuck in a bootloop. So the installation went fine but it just stuck in “boox reader starting up”. Recovery works fine…
Tried recovery and factory reset and wiping data/cache and reinstalled the firmware to no use. What can i do more? Must i send it back to china from Sweden or can i install firmware 1.7 (or must it be rooted). Please help me, love my onyx boox
/Martin in Sweden

Hi Martin, thank you for your support to Onyx Boox all the time. Please fill in this form with all information needed and our relative colleagues will reply back as soon as possible.