Hi guys,
I own an european AVH-X8700BT (4100NEX in US), and I stupidly bricked it trying to upgrade from v 1.03 to 1.053 with USB stick and that image - 15MY_FW-Update_v1.05_4G_20151216
Upgrade process failed, and no recovery was possible. I didn't backup the internal SD card, nor had it's password removed. Now unit is staring and after short period
is powering down. Please help, give me proper sequence and instructions how to de-brick. I can do JTAG nor flash if necessary, I am not afraid of complicated procedures...
I prefer to go straight to opened boot-loader and unlocked SD pass, b