Загрузился в armbian с dtb от odroid n2 и сделал образ mmcblk1l1 /boot- получилось 256mb.
trillo@trillo-desktop:~/Документы/dtb$ ./extract-dtb.py boot.img
Dumped 00_kernel, start=0 end=95170560
Dumped 81_dtbdump_rockchip,rk3328-box-z28.dtb, start=97615872 end=97652736
Dumped 82_dtbdump_rockchip,rk3328-box.dtb, start=97652736 end=97689600
Dumped 83_dtbdump_rockchip,rk3328-evb.dtb, start=97689600 end=97726464
Dumped 84_dtbdump_firefly,roc-rk3328-cc.dtb, start=97726464 end=97763328
Dumped 85_dtbdump_pine64,rock64.dtb, start=97763328 end=97800192
Dumped 86_dtbdump_popcornhour,rockbox.dtb, start=97800192 end=97837056
Dumped 87_dtbdump_rockchip,rk3368-evb-act8846.dtb, start=97837056 end=97865728
Dumped 88_dtbdump_geekbuying,geekbox.dtb, start=97865728 end=97894400
Dumped 89_dtbdump_tsd,rk3368-lion-haikou.dtb, start=97894400 end=97923072
Dumped 90_dtbdump_tronsmart,orion-r68-meta.dtb, start=97923072 end=97951744
Dumped 91_dtbdump_rockchip,px5-evb.dtb, start=97951744 end=97980416
Dumped 92_dtbdump_rockchip,r88.dtb, start=97980416 end=98009088
Dumped 93_dtbdump_rockchip,rk3399-evb.dtb, start=98009088 end=98058240
Dumped 94_dtbdump_vamrs,ficus.dtb, start=98058240 end=98115584
Dumped 95_dtbdump_firefly,firefly-rk3399.dtb, start=98115584 end=98172928
Dumped 96_dtbdump_google,bob-rev13.dtb, start=98172928 end=98234368
Dumped 97_dtbdump_google,kevin-rev15.dtb, start=98234368 end=98299904
Dumped 98_dtbdump_google,scarlet-rev15-sku6.dtb, start=98299904 end=98361344
Dumped 99_dtbdump_google,scarlet-rev15-sku7.dtb, start=98361344 end=98422784
Dumped 100_dtbdump_hugsun,x99.dtb, start=98422784 end=98480128
Dumped 101_dtbdump_khadas,edge-captain.dtb, start=98480128 end=98537472
Dumped 102_dtbdump_khadas,edge-v.dtb, start=98537472 end=98594816
Dumped 103_dtbdump_khadas,edge.dtb, start=98594816 end=98652160
Dumped 104_dtbdump_leez,p710.dtb, start=98652160 end=98709504
Dumped 105_dtbdump_friendlyarm,nanopc-t4.dtb, start=98709504 end=98766848
Dumped 106_dtbdump_friendlyarm,nanopi-m4.dtb, start=98766848 end=98824192
Dumped 107_dtbdump_friendlyarm,nanopi-neo4.dtb, start=98824192 end=98881536
Dumped 108_dtbdump_rockchip,rk3399-orangepi.dtb, start=98881536 end=98938880
Dumped 116_dtbdump_rockchip,rk3399-sapphire.dtb, start=99340288 end=99405824
Dumped 117_dtbdump_,amediatech,x96-max.dtb, start=99405824 end=268435456
Extracted 117 appended dtbs + kernel to dtb