The Kindle DX is very much a legacy device. Amazon don’t have much information on it available online. Most of the software update and help guides no longer exist. I also found plenty of resources on identifying your kindle, but there were no downloads available.
So the Kindle DX, it has no wifi, but has the world-wide 3G network (whisper net). The problem is that the Root Certificates in the device have expired. So there is no SSL, which means no Registration/Deregistration. The Kindle store is browsable, I think its because the site is HTTP. but HTTPS for downloads.
Back to getting your Kindle working. There are a few guides out there, but no links to downloads. the download I found on a 3rd party site was not for my DX.
Full Download Page for ALL models
https://www.amazon.com/gp/help/customer/display.html?nodeId=GKMQC26VQQMM8XSW
Kindle DX (2nd Generation)
- 2.5.8
- Your serial number starts with B004 download this file.
- After your device has fully updated, download and install the Kindle Services Update.
- Your serial number starts with B005 download this file.
- After your device has fully updated, download and install the Kindle Services Update.
- Your serial number starts with B009 download this file.
- After your device has fully updated, download and install the Kindle Services Update.
OK. to get your serial open settings, Home -> Menu -> Settings
Under device info you will find your serial number. The current software version of your Kindle will be at the bottom.
- Check your Software version
- If your software version is not 2.5.8. Download the “Download this file” link corresponding to your Kindle serial number. If you are already on this version, goto step 2.
- Using the USB on your computer. Copy it to the ‘root’ of the Kindle’s USB disk.
- While still in the settings page, press menu then Update Kindle.
- Update the Kindle Services
- If your software version is not 2.5.8. Download the “Kindle Services Update” link corresponding to your serial number.
- Using the USB on your computer. Copy it to the ‘root’ of the Kindle’s USB disk.
- While still in the settings page, press menu then Update Kindle.
If for any reason the Kindle ‘disconnects’ from your computer while copying the updates on, try another computer or cable. and if ‘update this kindle’ does not appear active in the menu, choose restart instead. The Kindle usually triggers all available updates on reboot.
If the kindle was not unregistered correctly before a factory reset it will come to live with the previous account. you can at this point unregister and reregister.