I've just updated my PW3 (G090) to 5.10.2 successfully. I reinstalled mrpi from the latest snapshot after checking the md5 hash. Every time I try to install KUAL - the coplate patched version or the latest snapshot mrpi destroys the package.
The mrinstaller log contains entries like this:
[2019-01-25 @ 10:46:09 -0429] :: [MRPI r15595] - Beginning the processing of package 'Update_KUALBooklet_78183a5_install.bin' (KUALBooklet 78183a5 I) . . .
Failed to parse package 'Update_KUALBooklet_78183a5_install.bin' (KUALBooklet 78183a5 I) [return code: 0], skipping . . .
Any ideas - I desperately need KOReader to view scanned PDFs that are useless on the native kindle pdf reader.