How to flash uboot after full erasing?
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I accidentally erased everything on my omega2 via console
erase all
is there way to flash boot loader again, cause after that I got brick, even led doesn't blink. I only see that something like CP2102 (my serial on omega) connected to my laptop.
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@Ilya-Mordasov you could try reading the docs and see if that helps. good luck
https://docs.onion.io/omega2-docs/the-bootloader.html
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Yes, I already read this one, but it’s not my case. I erased everything: bootloader, kernel, firmware. Seems, my omega is empty.
Theoretically, i could flash uboot via some JTAG, but I have to resolder spi flash to do that. Moreover, guess it’s a BGA chip and I’m not familiar with soldering bga.
What I have now is the connection between my laptop and this board over serial (which even shows nothing). My question is the way to reflash uboot over serial with clear Flash memory
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@Ilya-Mordasov have you read this thread?
https://community.onion.io/topic/1780/about-u-boot-bootloader
the last post has a link to omega2 u-boot source. supposedly, have not tried it
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@Ilya-Mordasov Probably @Larry-Pinney is your man.
Naked Omega2+
[Resolved] Omega2 Low Level Firmware Flash
U-Boot sources for omega2 / 2+
Omega2+ not starting upPlease read also some posts of @perillamint . ( @WereCatf @Chris-Stratton and the others) about de/soldering problems of the shield.
Good luck!
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Thanks. Seems I need to rewrite bootloader.
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The flash is not a BGA - you can clearly see all 8 contacts in the picture, and if you hold the MT7688 in reset it will stay out of the way of your programmer.
But you have to remove the shield.
Unfortunately, JTAG does not seem to be available without removing the shield either.
If you want to do low-level work you'd likely be better off with a Linkit Smart or an ACSIP module than an Omega2, in both cases where removing the shield is both less necessary, and substantially easier.
