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arthur@black:~/local/ols-fwloader$ sudo ./src/ols_fwloader -S -f APP -P /dev/OpenLogicSniffer 
[sudo] password for arthur: 
Found OLS HW: 1, FW: 2.3, Boot: 2
Found flash: WINBOND W25X40 
done...
Passed self-test :) 
arthur@black:~/local/ols-fwloader$ ./src/ols_fwloader -S -f APP -P /dev/OpenLogicSniffer 
Found OLS HW: 1, FW: 2.3, Boot: 2
Found flash: WINBOND W25X40 
done...
Passed self-test :) 

arthur@black:~/local/ols-fwloader$ ./src/ols_fwloader -f BOOT -n -P /dev/OpenLogicSniffer -V -w ~/local/ols-0308/OLS_Upgrader/PIC_firmware/OLSv1.firmware.v3.0.hex 
Found OLS HW: 1, FW: 2.3, Boot: 2
Found flash: WINBOND W25X40 
OLS switched to bootloader mode
[timestamp] [threadID] facility level [function call] <message>
--------------------------------------------------------------------------------
[ 0.007720] [0000414f] libusbx: debug [libusb_get_device_list] 
[ 0.007883] [0000414f] libusbx: debug [discovered_devs_append] need to increase capacity
[ 0.007928] [0000414f] libusbx: debug [libusb_get_device_descriptor] 
[ 0.007958] [0000414f] libusbx: debug [libusb_get_device_descriptor] 
[ 0.007987] [0000414f] libusbx: debug [libusb_get_device_descriptor] 
[ 0.008019] [0000414f] libusbx: debug [libusb_get_device_descriptor] 
[ 0.008116] [0000414f] libusbx: debug [libusb_get_device_descriptor] 
[ 0.008150] [0000414f] libusbx: debug [libusb_get_device_descriptor] 
[ 0.008181] [0000414f] libusbx: debug [libusb_open] open 7.12
[ 0.008270] [0000414f] libusbx: error [_get_usbfs_fd] libusbx couldn't open USB device /dev/bus/usb/007/012: Permission denied
[ 0.008313] [0000414f] libusbx: error [_get_usbfs_fd] libusbx requires write access to USB device nodes.
[ 0.008348] [0000414f] libusbx: debug [libusb_open] open 7.12 returns -3
USB Device (04d8:fc90) not found, is OLS in bootloader mode ?

arthur@black:~/local/ols-fwloader$ sudo ./src/ols_fwloader -f BOOT -n -P /dev/OpenLogicSniffer -V -w ~/local/ols-0308/OLS_Upgrader/PIC_firmware
[snip]
[ 1.156229] [000045ed] libusbx: debug [sync_transfer_cb] actual_length=64
[ 1.156256] [000045ed] libusbx: debug [add_to_flying_list] arm timerfd for timeout in 1000ms (first in line)
[ 1.185216] [000045ed] libusbx: debug [submit_bulk_transfer] need 1 urbs for new transfer with length 64
[ 1.185286] [000045ed] libusbx: debug [libusb_handle_events_timeout_completed] doing our own event handling
[ 1.185302] [000045ed] libusbx: debug [handle_events] poll() 4 fds with timeout in 60000ms
[ 1.186096] [000045ed] libusbx: debug [handle_events] poll() returned 1
[ 1.186130] [000045ed] libusbx: debug [reap_for_handle] urb type=1 status=0 transferred=64
[ 1.186158] [000045ed] libusbx: debug [handle_bulk_completion] handling completion status 0 of bulk urb 1/1
[ 1.186173] [000045ed] libusbx: debug [handle_bulk_completion] last URB in transfer --> complete!
[ 1.186187] [000045ed] libusbx: debug [disarm_timerfd] 
[ 1.186202] [000045ed] libusbx: debug [usbi_handle_transfer_completion] transfer 0x1aa4d58 has callback 0x7f1fcfafa7f0
[ 1.186216] [000045ed] libusbx: debug [sync_transfer_cb] actual_length=64
Checking flash ... (0x0800 - 0x3c00)
Verify failed :(
[ 1.186318] [000045ed] libusbx: debug [libusb_release_interface] interface 0
[ 1.186362] [000045ed] libusbx: debug [libusb_attach_kernel_driver] interface 0
[ 1.192314] [000045ed] libusbx: debug [libusb_close] 
[ 1.192388] [000045ed] libusbx: debug [usbi_remove_pollfd] remove fd 11
[ 1.192420] [000045ed] libusbx: debug [libusb_exit] 
[ 1.192432] [000045ed] libusbx: debug [libusb_exit] destroying default context

Cannot claim USB device
Unable to set alternative interface
Other error - recv