Hello, I am wandering if anybody had the same issue with Symmetricom PCIe-1000 PTP controller. Basically this is the PCIe card which suppose to talk with GrandMaster by PTP. I had small issue to assemble the Linux package for the most recent Linux kernel (4.4.0). But eventually I did that. Now, when I fire up CLI utility, I have some issue to execute certain items. For example, I could't get "Version" information using that tool. But I still could run some other commands from it. Looking to the card kernel messages (no surprise - this beast based on embedded Linux), I was spotting this one: platform fpga.0: firmware: requesting norfolk.bin FPGA: loaded norfolk.bin with 480148 bytes. FPGA: initialized DAC with 0x8000. fpga: allocated 1048576 bytes RAM. fpga: initialized BAR0 inbound WATR with 0x1ee00000. fpga: host DMA addr_h32 0x00000000 (host driver init). fpga: host DMA addr_l32 0x00000000 (host driver init). fpga: push timer created. fpga: loaded. mtd->read(0x554 bytes from 0xd982ac) returned ECC error mtd->read(0x2ab bytes from 0xd98000) returned ECC error JFFS2 notice: (817) check_node_data: wrong data CRC in data node at 0x00d97b9c: read 0x710378da, calculated 0xd6e49ce8. mtd->read(0xc4 bytes from 0x1ca1f3c) returned ECC error JFFS2 notice: (817) read_dnode: wrong data CRC in data node at 0x01ca19fc: read 0x3757c16a, calculated 0xc3a99573. mtd->read(0x1fa bytes from 0x1ca1800) returned ECC error Which probably means corrupted File System. I tried to force to run FSCK during the boot. But had no luck with this. Looks like the best option will be re-flash the firmware. As Microsemi acquired Symmetricom, many resource become unavailable to get them online. I am wandering if anybody has link to the firmware for that PCIe-1000 PTP adapter. Looking inside of /etc/norfolkVer file on the card, I am getting following # # Norfolk project version # CurrVersion: Beta CurrBuild: 001 ----------------------------------------------------------------------- Beta Release 12/5/2011 -- WBW, V.P.