HP-15C LE bricked?

[dmh]

Having reflashed my 15C LE 10+ times I've had no issue with the timing of the button presses and you just need to follow the sequence as per the WP 34S manual which can be seen in real time in my 15C LE PSE bug fix video.

One observation that may help others, as the 15C LE keyboard is not as good as the original Voyager models and the ON and shift keys are worst, I found that the last ON before clicking download in MySamba did not always actually turn the calculator on and as there is no visible confirmation (the display doesn't show anything at this point) you can't tell if it is on or not but the software download will fail.

Subsequently I made sure the final ON before the download was a firm press to ensure it did power up. I've had no failures since.