Thank for your help,
Y boot on microcard, and for the upgrade, I reset the entire microcard with download and copie all new file from https://downloads.openwrt.org/snapshots … i/generic/
With the 24042015 version, the boot stop here [ 1.514068] Freeing unused kernel memory: 212K (c0505000 - c053a000)
[ 1.632284] usb 1-1: New USB device found, idVendor=7392, idProduct=7711
[ 1.639376] init: failed to symlink /tmp -> /var
[ 1.644088] init: Console is alive
[ 1.647583] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 1.654970] init: - watchdog -
[ 1.658461] usb 1-1: Product: 802.11 n WLAN
[ 1.662646] usb 1-1: Manufacturer: Ralink
[ 1.667428] usb 1-1: SerialNumber: 1.0
[ 2.658748] init: - preinit -
Detected cubieboard // Cubietech Cubieboard
[ 2.722188] random: mktemp urandom read with 7 bits of entropy available
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level
[ 5.788771] mount_root: mounting /dev/root
[ 5.793296] EXT4-fs (mmcblk0p2): warning: mounting unchecked fs, running e2fsck is recommended
[ 5.812834] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 5.823342] procd: - early -
[ 5.826837] procd: - watchdog -
[ 7.315569] procd: - ubus -
[ 8.326023] procd: - init -
Please press Enter to activate this console.
[ 9.935169] NET: Registered protocol family 10
[ 9.952594] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 9.995060] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 10.019875] nf_conntrack version 0.5.0 (16021 buckets, 64084 max)
[ 10.125117] sun4i-emac 1c0b000.ethernet: eth0: at f01d6000, IRQ 18 MAC: 02:d1:0d:01:ee:e3
[ 10.159852] xt_time: kernel timezone is -0000
[ 10.202579] PPP generic driver version 2.4.2
[ 10.224539] NET: Registered protocol family 24
my dhcp server have not log from the cubieboard.
I'm despite.