# Interstate 75W SWD Issue

**URL:** <https://forums.pimoroni.com/t/interstate-75w-swd-issue/28878>\
**Category:** Support\
**Created:** [May 22, 2026, 8:57am UTC](https://forums.pimoroni.com/t/interstate-75w-swd-issue/28878 "2026-05-22T08:57:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DrJonEA](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/drjonea/32/12186_2.png) [@DrJonEA](https://forums.pimoroni.com/u/DrJonEA)\
**Post date:** [May 22, 2026, 8:57am UTC](https://forums.pimoroni.com/t/interstate-75w-swd-issue/28878/1 "2026-05-22T08:57:09Z")

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Does the Interstate 75 W (RP2350) have a known issue with SWD flashing? I’ve not managed to get openocd to recognise the board. Tried multiple RPI Debug Probes, RP2040 board configed as a debug probe and multiple cables. Nothing seems to work.

Getting the generic “Error: Error connecting DP: cannot read IDR” error, which normally means basic connectivity isn’t there.

Looking at the board for a video for my YouTube channel so would like to find a solution.

Thanks

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**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [May 23, 2026, 9:53pm UTC](https://forums.pimoroni.com/t/interstate-75w-swd-issue/28878/2 "2026-05-23T21:53:55Z")

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Opening an issue on GitHub “might” help you sort it out?  
[Issues · pimoroni/interstate75 · GitHub](https://github.com/pimoroni/interstate75/issues)

I have an i75 but it’s the older RP2040 version.