...i have tools for solder new emmc - that is not problem - it is my work. But i dont have correct adapter for my programmer...and solder it directly to sd reader is work for long time...and emmc is really bad soo i am not sure if will be possible to made good working image.
Another problem is, that emmc will have many partitions and will be for 90% paired with soc - as on another phones. So solder only new emmc is not solution i mean.
Solution will be maybe jtag but again without correct programmer, service manual it is impossible.
I have tested this in hostory on XT897