it seem that for many apt applications on ubuntu are years behind. I tried
those two options as well with the same DAP. The Raspberry seems not support
CMIS-SAP and the latest openocd fails as well.
openocd:
~~~
Open On-Chip Debugger 0.12.0+dev-02422-g5b3db97c4 (2026-03-06-14:15)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : [rp2350.cm0] Hardware thread awareness created
Info : [rp2350.cm1] Hardware thread awareness created
_rv_reset_init
adapter speed: 1000 kHz
Error: unable to find a matching CMSIS-DAP device
** OpenOCD init failed **
shutdown command invoked
embedded:startup.tcl:1965: Error:
Traceback (most recent call last):
File "embedded:startup.tcl", line 2000, in program
program_error {** OpenOCD init failed **} 1
File "embedded:startup.tcl", line 1965, in program_error
shutdown error
~~~
raspberry:
~~~
Open On-Chip Debugger 0.12.0+dev-00002-gcd4873400 (2026-03-06-14:21)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Error: The specified adapter driver was not found (cmsis-dap)
The following adapter drivers are available:
dummy { jtag }
jtag_vpi { jtag }
vdebug { jtag swd }
jtag_dpi { jtag }
buspirate { jtag swd }
remote_bitbang { jtag swd }
sysfsgpio { jtag swd }
linuxspidev { swd }
xlnx_pcie_xvc { jtag swd }
rshim { swd }
~~~
---
**[tickets:#467] RP2350 flash fails with Incorrect RP2040 BOOT ROM version**
**Status:** new
**Milestone:** 0.12.0
**Labels:** PICO RP2350
**Created:** Fri Mar 06, 2026 09:22 AM UTC by symdeb
**Last Updated:** Fri Mar 06, 2026 09:50 AM UTC
**Owner:** nobody
**Attachments:**
-
[openocd_rp2350.log](https://sourceforge.net/p/openocd/tickets/467/attachment/openocd_rp2350.log)
(80.9 kB; text/x-log)
-
[rp2350_olddebugproberepo.cfg](https://sourceforge.net/p/openocd/tickets/467/attachment/rp2350_olddebugproberepo.cfg)
(2.5 kB; application/octet-stream)
-
[rp2350_openocd_repo.cfg](https://sourceforge.net/p/openocd/tickets/467/attachment/rp2350_openocd_repo.cfg)
(6.8 kB; application/octet-stream)
-
[rp2350_raspberry_repo.cfg](https://sourceforge.net/p/openocd/tickets/467/attachment/rp2350_raspberry_repo.cfg)
(14.0 kB; application/octet-stream)
Using an RP2040 pr RP2350 with a debugprobe firmware from the raspberry repo
openocd install with sudo apt-get install
it seem openocd is missing the rp2350.cfg so copied the .cfg file to
~~~
sudo cp rp2350.cfg /usr/share/openocd/scripts/target/.
~~~
Ubuntu 25.10
Targets 2040 and 2040W flash is fine:
~~~
sudo openocd -f interface/cmsis-dap.cfg -f target/rp2040.cfg -c "adapter speed
5000" -c "program build/uart.elf verify reset exit
~~~
Targets 2350 and 2340W fail (elf file build with correct options for RP2350)
~~~
sudo openocd -f interface/cmsis-dap.cfg -f target/rp2350.cfg -c "adapter speed
5000" -c "program build/uart.elf verify reset exit"
~~~
There are several rp2350.cfg files around. Attached 3 versions. only
olddebugproberepo.cfg found in an old openocd repo from raspberry downstream
seems to work. the other can't even detect the board. the others are the ones
from openocd repo, and the current raaspberry git openocd downstream repo
```
-rw-rw-r-- 1 user user 2494 Feb 15 2025 rp2350_olddebugproberepo.cfg
-rw-rw-r-- 1 user user 6752 Mar 6 15:24 rp2350_openocd_repo.cfg
-rw-rw-r-- 1 user user 14009 Mar 6 15:16 rp2350_raspberry_repo.cfg
```
The debug port seems to work
~~~
openocd -f interface/cmsis-dap.cfg -f target/rp2350.cfg -c "adapter speed 1000"
-c "tcl_port 6888" -c "telnet_port 5666"
~~~
~~~
Open On-Chip Debugger 0.12.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : Hardware thread awareness created
Info : Hardware thread awareness created
Info : Hardware thread awareness created
Info : Hardware thread awareness created
cortex_m reset_config sysresetreq
adapter speed: 1000 kHz
Info : Listening on port 6888 for tcl connections
Info : Listening on port 5666 for telnet connections
Info : Using CMSIS-DAPv2 interface with VID:PID=0x2e8a:0x000c,
serial=E6625C05E7877123
Info : CMSIS-DAP: SWD supported
Info : CMSIS-DAP: Atomic commands supported
Info : CMSIS-DAP: Test domain timer supported
Info : CMSIS-DAP: FW Version = 2.0.0
Info : CMSIS-DAP: Interface Initialised (SWD)
Info : SWCLK/TCK = 0 SWDIO/TMS = 0 TDI = 0 TDO = 0 nTRST = 0 nRESET = 0
Info : CMSIS-DAP: Interface ready
Info : clock speed 1000 kHz
Info : SWD DPIDR 0x4c013477
Info : [rp2350.dap.core0] Cortex-M33 r1p0 processor detected
Info : [rp2350.dap.core0] target has 8 breakpoints, 4 watchpoints
Info : [rp2350.dap.core1] Cortex-M33 r1p0 processor detected
Info : [rp2350.dap.core1] target has 8 breakpoints, 4 watchpoints
Info : starting gdb server for rp2350.dap.core0 on 3333
~~~
---
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