BUilD and PROGRAM the Audio example
$  python buildprog.py -c both -b debug -d both -m internal -M
$ python buildprog.py -c both -b debug -d both -p --recover_on_fail

this was taken from my command screen:
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skrug@DESKTOP-KJBLMH9 MINGW64 /c/A/s4/tools/buildprog
$  python buildprog.py -c both -b debug -d both -m internal -M
+------------+----------+---------+--------------+---------------------+---------------------+
|    snr     | snr conn |  device | only reboot  | core app programmed | core net programmed |
+------------+----------+---------+--------------+---------------------+---------------------+
| 1050171701 |   ←[32mTrue←[0m   | headset | Not selected |     Selected TBD    |     Selected TBD    |
| 1050131916 |   ←[32mTrue←[0m   | gateway | Not selected |     Selected TBD    |     Selected TBD    |
|     10     |  ←[33mFalse←[0m   | headset | Not selected |     Selected TBD    |     Selected TBD    |
+------------+----------+---------+--------------+---------------------+---------------------+
Invoking build step
Net core uses precompiled hex
Run: west build C:\A\s4 -b nrf5340_audio_dk_nrf5340_cpuapp -d C:\A\s4\build\dev_headset\build_debug 
[0/14] Performing build step for 'empty_net_core_subimage'
[0/5] Performing build step for 'b0n_subimage'
ninja: no work to do.
[1/10] Performing build step for 'mcuboot_subimage'
ninja: no work to do.
[4/6] Generating ../../zephyr/net_core_app_test_update.hex
image.py: sign the payload
[6/6] Running post-build ble5-ctr signing step...
0x00000001
image.py: sign the payload
input hex name C:\ncs\v2.4.0\nrf\lib\bin\bt_ll_acs_nrf53\bin\ble5-ctr-rpmsg_shifted_3349.hex
relative path
Run: west build C:\A\s4 -b nrf5340_audio_dk_nrf5340_cpuapp -d C:\A\s4\build\dev_gateway\build_debug
[0/14] Performing build step for 'empty_net_core_subimage'
[0/5] Performing build step for 'b0n_subimage'
ninja: no work to do.
[1/10] Performing build step for 'mcuboot_subimage'
ninja: no work to do.
[2/10] Generating ../../zephyr/net_core_app_test_update.hex
image.py: sign the payload
[6/6] Running post-build ble5-ctr signing step...
0x00000001
image.py: sign the payload
input hex name C:\ncs\v2.4.0\nrf\lib\bin\bt_ll_acs_nrf53\bin\ble5-ctr-rpmsg_shifted_3349.hex
relative path
build_prog.py finished. Report:
+------------+----------+---------+--------------+---------------------+---------------------+
|    snr     | snr conn |  device | only reboot  | core app programmed | core net programmed |
+------------+----------+---------+--------------+---------------------+---------------------+
| 1050171701 |   True   | headset | Not selected |     Selected TBD    |     Selected TBD    |
| 1050131916 |   True   | gateway | Not selected |     Selected TBD    |     Selected TBD    |
|     10     |  False   | headset | Not selected |     Selected TBD    |     Selected TBD    |
+------------+----------+---------+--------------+---------------------+---------------------+

skrug@DESKTOP-KJBLMH9 MINGW64 /c/A/s4/tools/buildprog
$ python buildprog.py -c both -b debug -d both -p --recover_on_fail
+------------+----------+---------+--------------+---------------------+---------------------+
|    snr     | snr conn |  device | only reboot  | core app programmed | core net programmed |
+------------+----------+---------+--------------+---------------------+---------------------+
| 1050171701 |   ←[32mTrue←[0m   | headset | Not selected |     Selected TBD    |     Selected TBD    |
| 1050131916 |   ←[32mTrue←[0m   | gateway | Not selected |     Selected TBD    |     Selected TBD    |
|     10     |  ←[33mFalse←[0m   | headset | Not selected |     Selected TBD    |     Selected TBD    |
+------------+----------+---------+--------------+---------------------+---------------------+
Invoking build step
Net core uses precompiled hex
Run: west build C:\A\s4 -b nrf5340_audio_dk_nrf5340_cpuapp -d C:\A\s4\build\dev_headset\build_debug 
[0/14] Performing build step for 'empty_net_core_subimage'
[0/5] Performing build step for 'b0n_subimage'
ninja: no work to do.
[1/10] Performing build step for 'mcuboot_subimage'
ninja: no work to do.
[4/6] Generating ../../zephyr/net_core_app_test_update.hex
image.py: sign the payload
[6/6] Running post-build ble5-ctr signing step...
0x00000001
image.py: sign the payload
input hex name C:\ncs\v2.4.0\nrf\lib\bin\bt_ll_acs_nrf53\bin\ble5-ctr-rpmsg_shifted_3349.hex
relative path
Run: west build C:\A\s4 -b nrf5340_audio_dk_nrf5340_cpuapp -d C:\A\s4\build\dev_gateway\build_debug
[0/14] Performing build step for 'empty_net_core_subimage'
[0/5] Performing build step for 'b0n_subimage'
ninja: no work to do.
[1/10] Performing build step for 'mcuboot_subimage'
ninja: no work to do.
[4/6] Generating ../../zephyr/net_core_app_test_update.hex
image.py: sign the payload
[6/6] Running post-build ble5-ctr signing step...
0x00000001
image.py: sign the payload
input hex name C:\ncs\v2.4.0\nrf\lib\bin\bt_ll_acs_nrf53\bin\ble5-ctr-rpmsg_shifted_3349.hex
relative path
Using NET hex: C:\lib\bin\bt_ll_acs_nrf53\bin\ble5-ctr-rpmsg_3349.hex for 1050171701 headset left
Using NET hex: C:\lib\bin\bt_ll_acs_nrf53\bin\ble5-ctr-rpmsg_3349.hex for 1050131916 gateway
Programming net core on: 1050171701 headset left
Programming net core on: 1050131916 gateway
Programming app core on: 1050171701 headset left
Programming app core on: 1050131916 gateway
Programming UICR
Parsing parameters.
Writing.
Parsing parameters.
Writing.
Resetting 1050131916 gateway
Parsing parameters.
Writing.
Resetting 1050171701 headset left
Applying system reset.
Run.
Applying system reset.
Run.
build_prog.py finished. Report:
+------------+----------+---------+--------------+---------------------+---------------------+
|    snr     | snr conn |  device | only reboot  | core app programmed | core net programmed |
+------------+----------+---------+--------------+---------------------+---------------------+
| 1050171701 |   True   | headset | Not selected |         Done        |         Done        |
| 1050131916 |   True   | gateway | Not selected |         Done        |         Done        |
|     10     |  False   | headset | Not selected |     Not selected    |     Not selected    |
+------------+----------+---------+--------------+---------------------+---------------------+

skrug@DESKTOP-KJBLMH9 MINGW64 /c/A/s4/tools/buildprog
$

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