# How to get out of firmware XB24-B 1420

**URL:** <https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932>\
**Category:** XBee - 802.15.4\
**Created:** [February 22, 2013, 12:03pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932 "2013-02-22T12:03:04Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![EFatu](https://avatars.discourse-cdn.com/v4/letter/e/df705f/32.png) [@EFatu](https://forums.digi.com/u/EFatu)\
**Post date:** [February 22, 2013, 12:03pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932/1 "2013-02-22T12:03:04Z")

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I’m new in this forum.

I am using a XBee Series 2 Module (part no. XB24-Z7WIT-004 Rev J).  
After uploading the firmware XB24-B 1420 (for ZIGBEE router sensor) using X-CTU, I could not communicate with the modem anymore, and hence unable to upload the firmware further.

I check the default parameters of the firmware XB24-B 1420. Unlike other versions such as 1220/1020, there is no baud rate parameter. Is that why I cannot set the correct baud rate to communicate with the modem?

I have the xBee shield.

Please, any suggestion on how I can reupload other firmware into the module is much appreciated.

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**Author:** ![spastor](https://avatars.discourse-cdn.com/v4/letter/s/35a633/32.png) [@spastor](https://forums.digi.com/u/spastor)\
**Post date:** [February 22, 2013, 12:36pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932/2 "2013-02-22T12:36:12Z")

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Hello Ernesto,

If the firmware you uploaded doesn’t have a Serial interface, X-CTU will not be able to detect it. Try to upload the firmware checking “Always Update Firmware” in Modem Configuration Tab, follow the instructions in the pop-up (it asks for a reset).

If that doesn’t work you can try to access the radio bootloader with the following steps:  
1.- Open X-CTU Terminal with 15200 8-N-1.  
2.- Set Break. Clear RTS.  
3.- Reset module.  
4.- Clear Break. Set RTS.  
5.- Hit Enter, bootloader should came up.  
6.- Go to Modem Configuration tab, select the new firmware, check “Always Update Firmware” and click Write. It should detect the bootloader and upload the new firmware.

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**Author:** ![EFatu](https://avatars.discourse-cdn.com/v4/letter/e/df705f/32.png) [@EFatu](https://forums.digi.com/u/EFatu)\
**Post date:** [February 22, 2013, 1:23pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932/3 "2013-02-22T13:23:11Z")

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Thanks a lot for your help, Sebastián.

For first point, i try and i could not solve the problem.

With the second options, i don’t quite understand the process. I do the next steps:  
1.- Open XCTU terminal with ¿15200? –\> i select 9600 bud in Pc Setting tab.  
2.- Select option “Break” in terminal tab.  
3.- De-select option “Reset”  
4.- Reset module, with a jumper between pin 5 and pin 10 for 1 second (red light in xbee shield goes out)  
5.- Remove the jumper (red light in xbee shield goes comes on)  
6.- Go to Modem configuration to write the selected new firmware and the problem is the same: there is not communication…

What am I doing wrong?  
Ernesto

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**Author:** ![spastor](https://avatars.discourse-cdn.com/v4/letter/s/35a633/32.png) [@spastor](https://forums.digi.com/u/spastor)\
**Post date:** [February 22, 2013, 3:35pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932/4 "2013-02-22T15:35:20Z")

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You will not able to see the bootloader at 9600 bps, it’s configured for 115200.

How are you communicating with the module? Do you have an XBIB? Now I read that you have an XBee Shield, it is for Arduino, isn’t it? I’m not familiar with arduino shields, do they offer a way to communicate directly from the PC to the XBee? Do they have flow control (CTS, RTS lines)?

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**Author:** ![EFatu](https://avatars.discourse-cdn.com/v4/letter/e/df705f/32.png) [@EFatu](https://forums.digi.com/u/EFatu)\
**Post date:** [February 22, 2013, 4:47pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932/5 "2013-02-22T16:47:57Z")

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Hello, Sebastián.  
Indeed, I’m connecting with arduino via USB and xBee shield. Now I have no way to communicate with XBee.  
Is it possible to load the firmware otherwise?

Thanks.

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**Author:** ![spastor](https://avatars.discourse-cdn.com/v4/letter/s/35a633/32.png) [@spastor](https://forums.digi.com/u/spastor)\
**Post date:** [February 22, 2013, 5:34pm UTC](https://forums.digi.com/t/how-to-get-out-of-firmware-xb24-b-1420/1932/6 "2013-02-22T17:34:48Z")

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Then, how did you changed the firmware?