Return to the factory bootloader

PicoCalc
1

Hi!

I’m new with PicoCalc and I would like to clarify the following, if anyone can help:

If a flash my Pico with a 3rd party bootloader (let’s say UF2 bootloader), if I want to go back to the original (factory) bootloader, how is it done? Just reflash Pico with “PicoCalc_Bootloader_v0.5.uf2” that comes in the original SD Card?

Thanks in advance and best regards to you all!

2

Nuke your flash first or you could have issues. The one from Raspberry themselves is good and handles 8/16Mb chips… Just flash like any other image.

https://www.raspberrypi.com/documentation/microcontrollers/pico-series.html#resetting-flash-memory

2 Likes
3

Thanks a lot for the advice!

I’ll keep that in mind.

1 Like
4

Bootloader changes never need a flash_nuke. Literally the only time it makes the slightest difference is with the few apps that manage their own internal flash storage (picomite, micropython) and you want to wipe that.

1 Like
5

Ok! Thanks for sharing your knowledge!

By the way dcan you tell me if the original bootloader is the UF2 file named “PicoCalc_Bootloader_v0.5.uf2” that comes within the original SD Card and where to get the updated versions?

6

I cannot, as none of them are fit for purpose. Either use uf2loader, or go without (for the few apps that aren’t happy with it.)