crwdns2934241:0crwdne2934241:0 Dan

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Did you follow our guide here? [guide|112876]

You might want to check your cable connections as an example the battery board data cable might not be fully seated (ZIF not latched) or the connector damaged which is what I often encounter with your symptoms.

crwdns2915684:0crwdne2915684:0:

open