asfrank16 - There are two different \"major flavors\" of IPK files. One is recognized by the Sharp GUI \"Add/Remove Software\" utility. The other is ignored by same.
You can quickly tell them apart no matter what OS or platform you are using by simply checking the first handfull of bytes with a hex viewer or editor (Midnight Commander works well on my C860 for this puropse).
The Sharp \"flavor\" IPKs all start with (hex) 1F 8B 08 - followed by either (Hex) 00 or 08.
The OPIE \"flavor\" all start with (Hex) 21 3C 61 72 63 68 3E 0A [ ACSII = !<ARCH> ].
There is a well documented \"religious\" war on going regarding these two IPK formats. Search IPKG for starters here.
The Sharp IPKs are composed of files & directories wrapped in TAR balls, the TAR balls then GZIP\'d, the results wrapped in another TAR ball and that TAR again GZIP\'d.
The OPIE IPKs are identical to the Sharps throught the first two steps but, instead of TAR & Gzip, they are wrapped using the AR utility. Which is almost unavailable under non-Unix based OSs, BTW. <Geeee! .... G>
Eero Heinonen\'s SH Archive Identifier v2.70 recognizes about 250 cross OS & cross platform archive formats. It identifies the Sharp IPKs as Type 63 - X1.TAR.GZ, if the last Hex characters are 00, or as Type 65 - True.TAR.GZ when the last Hex characters are 08.
It identifies the OPIE IPKs as either Type 77 TAR balls or as unknown format. SH ArchID recognizes a Type 151 AR format but neither of the OPIE IPK formats are found as ARs <this is under Windows, BTW>.
AR files produced under Windows with Haruhiko Okumura & Terran Melconian\'s AR utility ARE recognized by SU ArchID as valid AR files but their structures are nothing like those of the OPIE IPKs.
The AR utility from the binutils package installed on my C860 sees both types of the OPIE IPK format as AR files. SO there is a major diffeence between the Linux ARs and the AR files produced by the , to my best knowledge, ONLY WIndows AR utility. Hummmmm <G>.
You can unpackage the OPIE IPKs with AR on your Z or on a Linux box and either install the DATA.TAR.GZ contents manually, or repackage the 3 files from the AR back into TAR.GZ IPKs, compatible with the SHARP IPK format.
I have seen posts that flashing different ROMs also solves this problem, but I haven\'t tried this myself. NONE of the IPKG versions, GUI or command line, that I have tried have been able to install the OPIE flavor IPKs on my C860, btw.
Hope this is of some help. Holler if you need more info.
Bob W
Miami FL