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Topic: MKRZERO unreachable after updating boot loader (Read 1 time) previous topic - next topic

fouadagha

After visiting the link (https://learn.adafruit.com/installing-circuitpython-on-samd21-boards?view=all)
and following all the steps to upload the updated boot loader on the MKRZERO board , The red blinking led on the board turned off and windows can not see the port connected to MKRZERO. Any help by how to reset the MKRZERO to its old boot loader or if there any hard reset to the bord .

Juraj

#1
Oct 30, 2019, 08:54 am Last Edit: Oct 30, 2019, 08:56 am by Juraj
After visiting the link (https://learn.adafruit.com/installing-circuitpython-on-samd21-boards?view=all)
and following all the steps to upload the updated boot loader on the MKRZERO board , The red blinking led on the board turned off and windows can not see the port connected to MKRZERO. Any help by how to reset the MKRZERO to its old boot loader or if there any hard reset to the bord .
wire the MKR to programmer, then in IDE Tools menu select MKR Zero and Atmel EDBG programmer and Burn bootloader.

EDIT but you don't have a programmer. you used a sketch which replaced the bootloader.

fouadagha

Thank you for your relaying,
i followed all what you said but i don't get any result, plz can you send more explanation?

fouadagha


Juraj

#4
Oct 30, 2019, 11:56 am Last Edit: Oct 30, 2019, 06:07 pm by Juraj
There is a hardware format?
you need a programmer device to flash bootloader if the flashed bootloader doesn't work

https://learn.adafruit.com/programming-an-m0-using-an-arduino
this usually doesn't work. for me it worked once to rescue my MKR

ballscrewbob

#5
Oct 30, 2019, 05:27 pm Last Edit: Oct 30, 2019, 05:27 pm by ballscrewbob
@fouadagha
TOPIC MOVED.

You may want to READ THIS for future reference.
It will help you get the best out of the forum.

Bob.

It may not be the answer you were looking for but its the one I am giving based on either experience, educated guess, google or the fact that you gave nothing to go with in the first place so I used my wonky crystal ball.

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