# Upgrading Xbee s2c firmware from 401B to 4059

**URL:** <https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616>\
**Category:** XBee - Zigbee\
**Tags:** firmware, s2c, xbee\
**Created:** [April 18, 2016, 1:31pm UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616 "2016-04-18T13:31:02Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Mundhazir\_Lathef](https://avatars.discourse-cdn.com/v4/letter/m/7993a0/32.png) [@Mundhazir\_Lathef](https://forums.digi.com/u/Mundhazir_Lathef)\
**Post date:** [April 18, 2016, 1:31pm UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616/1 "2016-04-18T13:31:02Z")

</div>

How to upgrade Zigbee S2C to 4059.

My module has firmware 401B and I am trying to upgrade to 4059 (latest). Tried to upgrade from Xbee recovery option in XCTU tool. But, couldnt reset the module.

---

<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [April 18, 2016, 2:16pm UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616/2 "2016-04-18T14:16:47Z")

</div>

What is the full part number of the module you are working with and what is the device you are mounting the module on?

---

<div class="post-metadata">

**Author:** ![Mundhazir\_Lathef](https://avatars.discourse-cdn.com/v4/letter/m/7993a0/32.png) [@Mundhazir\_Lathef](https://forums.digi.com/u/Mundhazir_Lathef)\
**Post date:** [April 19, 2016, 8:22am UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616/3 "2016-04-19T08:22:28Z")

</div>

Part number - XB24CZ7PIS-004-revG  
I am using XBIB-U-SS interface board. Pins 1,2,3,4,6,10 and 29 are pulled from the board and connected to the respective pins of XB24C SMT module (To be upgraded).

Reset button of interface board is used to reset the SMT module

---

<div class="post-metadata">

**Author:** ![mvut](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.digi.com/mvut/32/31_2.png) [@mvut](https://forums.digi.com/u/mvut)\
**Post date:** [April 19, 2016, 9:20am UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616/4 "2016-04-19T09:20:28Z")

</div>

Try adding pin 25.

---

<div class="post-metadata">

**Author:** ![Mundhazir\_Lathef](https://avatars.discourse-cdn.com/v4/letter/m/7993a0/32.png) [@Mundhazir\_Lathef](https://forums.digi.com/u/Mundhazir_Lathef)\
**Post date:** [April 20, 2016, 2:24pm UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616/5 "2016-04-20T14:24:03Z")

</div>

Thanks Eric. It worked!!

---

<div class="post-metadata">

**Author:** ![sachin\_kr](https://avatars.discourse-cdn.com/v4/letter/s/65b543/32.png) [@sachin\_kr](https://forums.digi.com/u/sachin_kr)\
**Post date:** [September 5, 2017, 1:21pm UTC](https://forums.digi.com/t/upgrading-xbee-s2c-firmware-from-401b-to-4059/16616/6 "2017-09-05T13:21:06Z")

</div>

Hi

I am facing the same problem. My xbee firmware is 401B and is not being read by the XCTU. I am using Xbee USB adapter (Funduino).

Regards  
Sachin