# XBee devices with the XB24-ZB firmware not communicating with XB24-B devices
**URL:** https://forums.digi.com/t/xbee-devices-with-the-xb24-zb-firmware-not-communicating-with-xb24-b-devices/11911
**Category:** Embedded Devices
**Tags:** xbee, zigbee
**Created:** [September 3, 2013, 12:27pm UTC](https://forums.digi.com/t/xbee-devices-with-the-xb24-zb-firmware-not-communicating-with-xb24-b-devices/11911 "2013-09-03T12:27:51Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@byhisdeeds](https://forums.digi.com/u/byhisdeeds)
#### Post date: [September 3, 2013, 12:27pm UTC](https://forums.digi.com/t/xbee-devices-with-the-xb24-zb-firmware-not-communicating-with-xb24-b-devices/11911/1 "2013-09-03T12:27:51Z")
I have a mesh network working with some XBee 2.5 end nodes and a coordinator all programmed with the XB24-B firmware. I recently bought some additional devices but these seem to have come with XB24-ZB firmware. I notice that I can program them with either the XB24-B or XB24-ZB firmware but the new devices that came programmed with th XB24-ZB firmware cannot see the XB24-B devices. is there a way for me to get these new ZNET devices to see the older XB24-B devices.
---
### Author:  [@16ksa23](https://forums.digi.com/u/16ksa23)
#### Post date: [September 13, 2013, 9:07am UTC](https://forums.digi.com/t/xbee-devices-with-the-xb24-zb-firmware-not-communicating-with-xb24-b-devices/11911/2 "2013-09-13T09:07:03Z")
Hi,
ZNet is old protocol which is no longer supported by Digi. Refer the following PDF to upgrade from Znet to ZB, [http://ftp1.digi.com/support/documentation/upgradingfromznettozb.pdf](http://ftp1.digi.com/support/documentation/upgradingfromznettozb.pdf)
Now you have all ZigBee modules.