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Excellent... glad to see you back. My thanks to your earlier posts (which I had to dig a bit to find), which helped me greatly in the process. I hope I can help contribute as well.

A quick note: I found that the SD-card based AllSocket adapter referenced above had trouble reading my particular Hynix chip (a H25M42001FMRI).

Engineering at AllSocket confirmed it was incompatible (likely due to that model chip needing a different value filtering cap).

I purchased this instead, and it worked like a charm:

DS3000-USB-eMMC153/169-Reader

It also has some other features such as:

- Write protect switch
- Power and activity/status LED's
- Power switch (handy for re-detecting hardware for troublesome recovery)

It also doesn't require buying a quality USB-to-SD adapter if your computer doesn't already have one, helping offset the additional cost.
 

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Nice, thanks scaesare. It is a bit spendy tho.

Don't understand why the MMC-based one wouldn't work on yours. Works fine for me. (Feb 2015 build P85D)
I think it may be the vintage of eMMC. The datasheet for the early Hynix chips specifies a 1pf capacitor decoupling VDDi. The value of cap C2 on the SD adapter is only 0.1pf:


Somebody who swapped out that cap said they were able to get it to operate successfully.
 
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