OpenSDA / DAPLink do not update - stuck in MAINTENANCE

[Anonymous]

This looks like an old problem and the solution is available from mbed but following it I still cannot upgrade firmware.

My FRDM-K64F board debug firmware was corrupted and I followed the instructions on https://os.mbed.com/blog/entry/DAPLink-bootloader-update/   to the letter . I got OpenSDA to boot as MAINTENANCE but on the step #5 the upgrade to the DAPLink did not work: after the upgrade firmware still boots as MAINTENANCE. As a result, it is only a storage device but not recognized as a debug probe. Tried to upload OpenSDA binary from OpenSDA Serial and Debug Adapter|NXP 

the same result - the board stuck in MAINTENANCE and no debug probe recognized.

Please help.

[Bing]

I solved the same problem by erasing MK64 flash with an external JLINK.

In my case some buggy codes put MK64 resetting constantly, which in turn hold the onboard OpenSDA on MAINTENANCE mode via reset pin.

Hope you can revive your board by the same approach.

[Robin_Shen]

Please check the version of the DAPLink bootloader or interface firmware in the DETAILS.TXT when the device is mounted as MAINTENANCE or DAPLINK.

I am using the DAPLink rev0244 OpenSDA v2.2 Bootloader(0244_k20dx_bl_0x5000.bin) and DAPLink rev0244 firmware application(k20dx_frdmk64f_if_crc_legacy_0x5000.bin) download from OpenSDA Serial and Debug Adapter|NXP.

After firmware application is installed, you should be able to find it in Device Manager.

Best Regards,

Robin

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[Anonymous]

I did all that sequence on two PCs (WIndows 7 and Win 10) - the same result - still MAINTENANCE mount as as external drive but no probe recognized.