i will check it today !! plz wait
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uploaded new image - checked - works
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We are loading too much into emmc. Is there any possibility that emmc might fail? I wonder if emmc can be changed when it broke? For example with 64 GB new one
eMMC has less chance of failure than SD cards for example, you can rest assure it will work just fine 
sd-cards is easier to change in case of malfunction, the difference will only be in speed possible.
no, SD cards were not meant to be used as system disks at all, they canāt handle things like continous reading and writing to the same memory addresses as they are very basic interms of wear levelling,
as for the Speed, it depends on the SD card protocol it uses like SDIO 3.0, UFS 2.1 etc
so there does exist SD cards that are faster than eMMC,
and the whole reason that SD cards are very widely used with SBCs is because of Rasberry piās engineers who thought it was a cheap and dirty way to have a system diskā¦
eMMC is somewhat better as being a system disk, but if you wanted to be really safe, the better option would be to use USB thumbs drives (using a notable flash controller, that incorperates flash wearing) or to use a spinning hard drive / SSDā¦
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Removable emmc is the best of both worlds. Rockpi 4c and odroid n2 both have this feature.
Great speed with great reliability and also user has choice of custom storage.
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Increases the cost plus takes more space.
Khadas boards are already more costly than others and i feel the only limiting factors are the emmc storage and maybe the qty of usb3 ports (only 1)
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the connectors those eMMC module use, donāt have more than 50 mating cycles in my testing,
so the connector may be expendable, the eMMC not so much.
hence its better if you use software methods to flash data then to require a physical connector to manually change out, there is a lot less downsides to having the soldered eMMC than upsides
to replaceable modules, so its nothing I would really worry to much about 
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