As for return,I can do this:
1.Cracked the recovery to disable the signature verification, so you can install any zip package to you ereader.
2.Modify the MTD‘s partition table: Extend userdata partition mounted on /data, add new partitions to build double system like what I do on my Boyue T61D(look at the picture).
3.Modify your firmware: add internal root access, Google Play support, or another thing I can do for you.
4.share my Chrome/Chromium based browser with custom css to all ereader's user who like Chrome/Chromium.
Please excuse my poor English.
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