Hi, welcome everyone. I’m using an H50 TV box that I was about to throw away because I thought I had completely bricked it.
I disassembled it and found the pins to activate maskrom mode.
I think this could be useful for everyone.
I then installed the current image, and everything seems to work except for the HDMI output (blank screen).
Do you have any suggestions? Thanks. Some data and photo below.
In case you want to install please note that also multitool fails to activate the HDMI, so you will need SSH to config.
SOC: RK3188 (Hopefully - I did not remove the heatsink)
eMMC: Samsung KLMBG4GEAC-B001 32GB (64x4)
eMCP: Samsung KMQN10006B 8 GB eMMC + 1 GB LPDDR3 RAM
Wi-Fi IC 339S0209 2.4G/5G
LAN working
WIFI Working
----------------------------
root@rk3318-box:~# lscpu
Architecture: aarch64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 4
On-line CPU(s) list: 0-3
Vendor ID: ARM
Model name: Cortex-A53
Model: 4
Thread(s) per core: 1
Core(s) per cluster: 4
Socket(s): -
Cluster(s): 1
Stepping: r0p4
CPU(s) scaling MHz: 60%
CPU max MHz: 1008.0000
CPU min MHz: 600.0000
BogoMIPS: 48.00
Flags: fp asimd evtstrm aes pmull sha1 sha2 crc32 cpuid
Caches (sum of all):
L1d: 128 KiB (4 instances)
L1i: 128 KiB (4 instances)
L2: 256 KiB (1 instance)
NUMA:
NUMA node(s): 1
NUMA node0 CPU(s): 0-3
Vulnerabilities:
Gather data sampling: Not affected
Indirect target selection: Not affected
Itlb multihit: Not affected
L1tf: Not affected
Mds: Not affected
Meltdown: Not affected
Mmio stale data: Not affected
Reg file data sampling: Not affected
Retbleed: Not affected
Spec rstack overflow: Not affected
Spec store bypass: Not affected
Spectre v1: Mitigation; __user pointer sanitization
Spectre v2: Not affected
Srbds: Not affected
Tsa: Not affected
Tsx async abort: Not affected
Vmscape: Not affected
root@rk3318-box:~# free -l
total used free shared buff/cache available
Mem: 1504636 291372 1037440 46940 297848 1213264
Low: 1504636 467196 1037440
High: 0 0 0
Swap: 752316 0 752316
SOME TESTS ON THE HDMI ISSUE:
hdmi_debug_20251008_230528.log
hdmi_test_20251008_230948.log
