GmP

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