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Title: Cannot flash anything from maskrom mode (possibly broken emmc) [Print This Page]

Author: phkr Time: 8/9/2019 18:23
Title: Cannot flash anything from maskrom mode (possibly broken emmc)
Hello,
I have tried to flash custom image to emmc (i used rkdeveloptool because there is not enough info about custom images on firefly wiki) but one of them was wrong and i had to enter maskrom mode using hardware method. After that i have following problem when trying to flash something (in both cases "rkdevelop db" step is already performed):
1) if i use

rkdeveloptool gpt parameter.txt

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it returns success but then does not show partition table. Partition table is shown if i reset device after this step or write partition table with

rkdeveloptool prm parameter.txt

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Anyway, if i flash any image after this step partition table is destroyed again
2) if i use upgrade_tool instead i can successfully flash parameter but when i flash any image after that i get the following error:

Compare data failed in checking,exit download image!

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Also, i used rs and rl commands to check data blocks defore and after writing image: parameter blocks are overriden. These commands also show some strange behaviour:

rl <any start block> 0x1

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shows the same output for any start block.

So, could it be that i have broken emmc controller when entered maskrom mode? How could i then make device bootable?

Author: penguin Time: 8/13/2019 09:39
Please try to download the latest firmware, and use the upgrade_tool bundled inside.

With the device in MaskRom mode, try to erase the flash first by:

upgrade_tool ef /path/to/firmware.img

Then upgrade the firmware:

upgrade_tool uf /path/to/firmware.img

Author: phkr Time: 8/13/2019 14:29

penguin Posted at 8/13/2019 04:39
Please try to download the latest firmware, and use the upgrade_tool bundled inside.

With the dev ...

I have tried it, it hangs at the very beginning

Author: penguin Time: 8/15/2019 16:12

phkr Posted at 8/13/2019 14:29
I have tried it, it hangs at the very beginning

Did it hang at the erasing flash stage, or upgrading firmware stage?

Would you post the full command log?

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