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physical nand damage or wrong firmware on Q+ h6 ???

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    physical nand damage or wrong firmware on Q+ h6 ???

    good mornin all, maybe someone could enlight me
    I own this box who internal board is a Q+ h6 version 3.0 . Despite of what is claimed ( 4 giga ram ) really the board is 2 giga ram.
    The board is like this

    https://forum.freaktab.com/forum/mai...-tv-box-review

    and FOR SURE it has a nand instead of EMMC

    The biggest problem is that the board is stick on Q logo and doesn't go further
    I have access to uart and when I try to flash new firmware, DOESN'T MATTER if I use phoenixsuite or the sd I have got this message:
    Code:
    [11608]set pll start
    [11611]set pll end
    [11613]beign to init dram
    [11615]DRAM VERSION IS V2_761
    [11920]MP_PGSR0 IS = 0040005d
    [11923]BYTE0 GATE ERRO IS = 00000002
    [11926]BYTE1 GATE ERRO IS = 00000002
    [11930]BYTE2 GATE ERRO IS = 00000002
    [11934]BYTE3 GATE ERRO IS = 00000002
    [12541]DRAM CLK =672 MHZ
    [12543]DRAM Type =3 (3:DDR3,4:DDR4,6:LPDDR2,7:LPDDR3)
    [12549]DRAM zq value: 003b3bfb
    [12853]IPRD=008e008d--PGCR0=00000f7d--PLL=b0003700
    [12858]para1 = 000030fb,para2 = 08000000
    [12874]DRAM simple test OK.
    [12877]init dram ok
    U-Boot 2014.07 (Mar 28 2019 - 14:53:51) Allwinner Technology
    [18.648]uboot commit : 8
    [18.648]secure enable bit: 0
    [18.648]normal mode: with secure monitor
    I2C: ready
    [18.650]pmbus: ready
    [18.650]probe axp is dummy
    [18.650]set pc_bias(1) bias:1800
    [18.650]set pg_bias(5) bias:1800
    [18.652]PMU: cpux 1440 Mhz,AXI=720 Mhz
    [18.655]PLL6=600 Mhz,AHB1=200 Mhz, APB1=100Mhz MBus=400Mhz
    [18.662]fdt addr: 0x59cc3360
    [18.663]gd->fdt_size: 0x1e580
    [18.666]Relocation Offset is: 14d81000
    [18.719]gic: normal mode
    [18.719]flash init start
    [18.719]workmode = 16,storage type = 0
    [18.719]try card 2
    [18.719][mmc]: mmc driver ver 2018-4-19 17:20:00
    [18.721][mmc]: get sdc2 sdc_wp fail.
    [18.721][mmc]: get sdc2 sdc_hc_cap_unit fail.
    [18.721][mmc]: get sdc_ex_dly_used 2, use auto tuning sdly
    [18.724][mmc]: current is product mode, it will tune sdly later
    [18.729][mmc]: card2 io is 1.8V.
    [18.732][mmc]: get sdc2 sdc_tm4_hs200_max_freq 150.
    [18.737][mmc]: get sdc2 sdc_tm4_hs400_max_freq 100.
    SUNXI SD/MMC: 2
    [18.748][mmc]: ************Try SD card 2************
    [18.749][mmc]: mmc send if cond failed
    [18.752][mmc]: send app cmd failed
    [18.754][mmc]: ************Try MMC card 2************
    [18.763][mmc]: read op condition failed
    [18.763][mmc]: mmc send op cond failed
    [18.767][mmc]: read op condition failed
    [18.770][mmc]: mmc send op cond failed
    [18.773][mmc]: Card did not respond to voltage select!
    [18.778][mmc]: ************SD/MMC 2 init error!************
    [18.783][mmc]: mmc_init: mmc init fail, err -17
    [18.787]MMC init failed
    [18.790]try emmc fail
    [18.792]NAND_UbootProbe start
    [18.794]NB1 : enter phy init
    [18.797]nand_physic_init
    [18.802]pll6 clock is 600000000 Hz
    [18.802]pll6 clock is 600000000 Hz
    [18.805]uboot Nand0 clk: 20MHz,PERI=1200,N=4,M=15,T=10
    [18.810]uboot Nand Ecc clk: 20MHz,PERI=1200,N=4,M=15,T=20
    [18.815]pll6 clock is 600000000 Hz
    [18.818]pll6 clock is 600000000 Hz
    [18.822]uboot Nand0 clk: 40MHz,PERI=1200,N=2,M=15,T=20
    [18.826]uboot Nand Ecc clk: 40MHz,PERI=1200,N=2,M=15,T=40
    [18.832]Reset NDFC start 0 0
    [18.834]Reset NDFC end 0 0
    [18.838]nand not support! channel 0 chip 0: 2c 84 64 3c a9 04 00 00
    [18.843]nand not support! channel 0 chip 1: 00 00 00 00 00 00 00 00
    [18.849]nand not support! channel 0 chip 2: 00 00 00 00 00 00 00 00
    [18.855]nand not support! channel 0 chip 3: 00 00 00 00 00 00 00 00
    [18.861] no nand found !
    [18.863]nand_physic_init nand_build_nsi error
    [18.867]nand_physic_init error -1
    [18.870]NB1 : nand phy init fail
    [18.873]NB1 : enter phy Exit
    [18.876]nand_physic_exit
    [18.878]NAND_UbootProbe end: 0xffffffff
    [18.881]try nand fail
    [18.883]try spinor fail
    [18.885]flash init end
    initcall sequence 5ee50300 failed at call 4a00f9dc
    ### ERROR ### Please RESET the board ###
    Well is clear that I cannot reflash the internal nand due some error handling the nand itself. Now come some questions:
    1) Is someone aware of firmware running exclusively on nand for those boards ( maybe the firmware I have is for emmc)
    2) Is someone else experimenting problems in flashing this board and doesnt understand what is going on?
    3) Is someone aware of physical damages occurring to internal nand due ( maybe) to powerfailure or improper shut down
    I wish clarify that running from SD the board is perfectly working
    Looking for some kind replay, many thanks in advance
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