Kenwood firmware update failed
Thread Starter
Racer
Joined: Nov 2019
Posts: 427
Likes: 142
From: Kingman AZ
Kenwood firmware update failed
I have a Kenwood DMX957XR and just tried to do a firmware update. Ive had the unit for about a year and never updated it, fearing exactly just what happened. The unit is stuck in a rebooting loop saying it can't read the data. I've tried two different usb drives, completely erased and reformatted. They are a few years old, so I'm going to go pick up a new one or two tomorrow. Read one post where a guy went thru five different usb drives to get it to work. I've tried reformatting in each type of FAT format... ex, 32, and ntfs. Even tried taking the files out of the main folder. Nothing is working.
Anyone been down this road? How did you get it resolved? Is there a hard reset button holding technique to get the headunit out of the loop. Tried searching a didn't come up with anything on that either.
Anyone been down this road? How did you get it resolved? Is there a hard reset button holding technique to get the headunit out of the loop. Tried searching a didn't come up with anything on that either.
Instructor
Joined: Nov 2018
Posts: 122
Likes: 61
From: Cato, WI
Went down this same path on a DNX997XR. I had two steps that made the difference. First reformat your usb with a full (not quick) format to FAT(deault) format. Second, when you unzip the download file, unzip it directly to the target usb drive. Don't copy it over from another folder.
Not sure why this worked, but it loaded up on the next try.
Tom
Not sure why this worked, but it loaded up on the next try.
Tom
Thread Starter
Racer
Joined: Nov 2019
Posts: 427
Likes: 142
From: Kingman AZ
Went down this same path on a DNX997XR. I had two steps that made the difference. First reformat your usb with a full (not quick) format to FAT(deault) format. Second, when you unzip the download file, unzip it directly to the target usb drive. Don't copy it over from another folder.
Not sure why this worked, but it loaded up on the next try.
Tom
Not sure why this worked, but it loaded up on the next try.
Tom
Last edited by 208vette; Jun 16, 2021 at 11:58 PM.
Racer
Joined: Nov 2020
Posts: 343
Likes: 167
From: Warren County, NJ
I doubt that mattered if you were able to read/write the files on the computer, USB flash memory degrades from writing mostly, you loose sectors/capacity slowly. I also doubt zipping vs. copy/paste made a difference either so long as the write process finished and you got everything. Probably the full FAT 32 formatting that fixed it.
Thread Starter
Racer
Joined: Nov 2019
Posts: 427
Likes: 142
From: Kingman AZ
I doubt that mattered if you were able to read/write the files on the computer, USB flash memory degrades from writing mostly, you loose sectors/capacity slowly. I also doubt zipping vs. copy/paste made a difference either so long as the write process finished and you got everything. Probably the full FAT 32 formatting that fixed it.
