GNSS Correction Data Receiver (NEO-D9S) Hookup Guide
Contributors:
bboyho, 
PaulZC
bboyho, PaulZC 
u-blox Firmware Update
Note: Make sure that you are using a u-blox high precision GNSS (HPG) module that supports the SPARTN formatted corrections (i.e.
UBX-RXM-PMP). At the time of writing, the ZED-F9P supports the SPARTN formatted corrections sent by the NEO-D9S with FW 1.00 HPG 1.30 and above. We tested using the latest FW 1.00 HPG 1.32+. Check your module's firmware release notes if you are unsure if the version number supports the SPARTN formatted corrections.
We recommend checking the firmware on your high precision GNSS (HPG) module (in this case, the ZED-F9P). If the firmware is old, you will need to upgrade the firmware on the HPG module.
How to Upgrade Firmware of a u-blox GNSS Receiver
March 26, 2021
A few steps and you'll upgrade to the latest features on a u-blox GNSS receiver.
You can download the latest firmware from u-blox. Below is a link to the ZED-F9P module's product page. Click the "Documentation & resources" tab and look for the latest firmware under the section Firmware Update. You may need to hit the Load more button a few times before you can see the firmware.
Note: At the time of writing, the NEO-D9S works with the ZED-F9P. Other models with the u-blox F9 engine (such as the ZED-F9R) may work as long as the firmware supports the SPARTN formatted corrections (i.e.
UBX-RXM-PMP). Make sure to check the associated datasheets for your high precision GNSS module for more information.