RE: Bare-programming nrf51822

Håkon Alseth — Tue, 15 May 2018 13:42:01 GMT

Hi,

Which version of the MDBT40 module do you have? According to the readme you linked to, the FW will not work on parts with 16 kB RAM:

For the V1 (blue PCB) Bluefruit LE Friend, which is based on the first generation 16KB SRAM nRF51822 parts, you must use the 0.5.0 or lower series firmware.

The 0.6.0+ series firmware only works with newer boards based on 32KB SRAM nrf51822 parts like the Bluefruit LE UART Friend or V2 of the Bluefruit LE Friend (black PCBs). The 0.6.0+ firmware won't boot on older 16KB SRAM parts.

Please double-check that your module has the nRF51822_xxAC variant (256k flash, 32k RAM).

Best regards,

Håkon

RE: Bare-programming nrf51822

bolteon — Sun, 13 May 2018 07:26:29 GMT

Forgot to add... all the firmware can be found here:

github.com/.../README.md