User's Guide
Table Of Contents
- Contents
- Revision history
- Introduction
- Kit content
- Getting started
- Firmware
- Firmware update
- Hardware description
- Regulatory notices
- Glossary
- DK (Development Kit)
- GPIO
- Global Positioning System (GPS)
- Integrated Development Environment (IDE)
- MCUboot
- Near Field Communication (NFC)
- Personal Unblocking Key (PUK)
- Software Development Kit (SDK)
- SEGGER Embedded Studio (SES)
- Subscriber Identity Module (SIM)
- System in Package (SiP)
- System on Chip (SoC)
- User Equipment (UE)
- Universal Integrated Circuit Card (UICC)
- Universal Serial Bus (USB)
- Acronyms and abbreviations
- Legal notices
Firmware update
6. Click Browse from the drop-down list that appears as a result of the previous step in the nRF Connect
Programmer as shown in Figure 10: Selecting the firmware image file using Add HEX file (Browse)
option in the nRF Connect Programmer on page 18.
7. Select the MCUboot compatible HEX file from the file browser that opens up.
8. Click Write on the Device pane in the right as shown in Figure 11: Updating the application firmware
using Write option in nRF Connect Programmer on page 19.
The MCUboot DFU dialogue box appears as shown in Figure 12: MCUboot DFU dialogue box on page
19.
9. Click Write in the MCUboot DFU dialogue box and wait for the update to finish.
5.2.2.2 Updating application firmware on nRF52840 using an external debug
probe
Firmware updates on the nRF52840 SoC of Nordic Thingy:91 can be performed by using an externally
connected debug probe.
To update the application firmware on nRF52840 using an external debug probe, complete the steps in
this section.
1. Set the Nordic Thingy:91 SWD selection switch (SW2) to nRF52. Refer Figure 35: SWD SELECT switch on
page 37.
2. Connect the Nordic Thingy:91 to the debug out port on a 10-pin external debug probe, for example,
nRF9160 DK. Refer Figure 7: Connecting Nordic Thingy:91 to the external debug probe on page 15.
Note: If using nRF9160 DK as the debug probe, make sure that VDD_IO (SW11) is set to 1.8 V.
3. Make sure that the Nordic Thingy:91 and the external debug probe are powered on.
4. Update the application firmware using the nRF Connect Programmer by performing the following
steps:
a. Start nRF Connect Programmer.
b. Connect the external debug probe to the PC with a USB cable.
c. Click Select device and select the appropriate entry for the external debug probe from the drop-
down list in the nRF Connect Programmer.
d. Click Add HEX file on the right pane (named as File) and click Browse from the drop-down list that
appears in the nRF Connect Programmer.
e. Select the firmware image file in the file browser.
f. Click Erase & write on the Device pane on the right and wait for the update to finish.
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