sunxi-fel fixes (A10, A20 etc)

gistfile1.txt

Allwinner sunxi-tools timeout fix .. tried bot xhci and ehci switching bios settings with no luck
(A10, A20 olimex boards tested)

[  533.679976] new full-speed USB device number 7 using xhci_hcd
[  533.679976] usb 2-8: New USB device found, idVendor=1f3a, idProduct=efe8, bcdDevice= 2.b3
[  533.679981] usb 2-8: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[  597.256368] usb 2-8: USB disconnect, device number 7


[  385.247362] usb 4-1.1: new full-speed USB device number 19 using ehci-pci
[  385.247362] usb 4-1.1: new full-speed USB device number 19 using ehci-pci
[  385.356692] usb 4-1.1: New USB device found, idVendor=1f3a, idProduct=efe8, bcdDevice= 2.b3
[  385.356697] usb 4-1.1: New USB device strings: Mfr=0, Product=0, SerialNumber=0

$ sudo sunxi-fel --list --verbose
USB device 004:020   Allwinner A20     16516615:80868678:55484848:050323e8

$ sudo sunxi-fel version
AWUSBFEX soc=00001623(A10) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000

$ sudo sunxi-fel version
AWUSBFEX soc=00001651(A20) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000

$ sudo sunxi-fel spl main.sunxi
usb_bulk_send() ERROR -7: Operation timed out

bump sunxi-tools *DOWN*:
https://github.com/Thore-Krug/Flash-CHIP/issues/21#issuecomment-894696978

    Add a source that has the older version of sunxi-tools: nano /etc/apt/sources.list and append deb http://deb.debian.org/debian/ stretch main
    Update apt's cache: sudo apt update
    Install the package: sudo apt install sunxi-tools=1.4.1-1
    Mark hold to prevent it from being upgraded: apt-mark hold sunxi-tools
    To avoid complications you can remove stretch main from the sources.list again

** working
$ sudo sunxi-fel spl main.sunxi
$


** in serial 

Hello from Allwinner A20!
Returning back to FEL.
��
Hello from Allwinner A10!
Returning back to FEL.