Recover Dead Skybox Flash Using Serial RS2. Null modem Cable. Updated 2. 581. V6 RS2. 32 2. 5mm to 9 pin D type pinout. Updated 151. 5 to include notes on Prolific USB to serial adapter. You will need a 9 pin female to female RS2. Null Modem Cable. If you order one from Ebay, its best if the pin numbering is shown in the listing to ensure its the correct type. As long as pin 2 3, 3 2, 5 5 are connected, then its OK. Only these 3 wires are used on Openboxes Skyboxes. The other connections do not matter. NOTE A straight through serial cable looks the same but is wired differently to a null modem cable. Most modern pcs laptops no longer have RS2. In this case you will need to use a USB to serial adapter. Very few if any of the cheaper ones will work. Adapters with the Prolific PL2. HXD Revision D Chipset are known to work, so look for adapters with that chipset. You will still need a female to female null modem cable to use with these adapters, as the adapters simulate a genuine RS2. Tech Stuff RS232 Cables, Wiring and Pinouts. Brief tutorial and pinouts for RS232, RS422485, T1E1 and V. 35. If you want to know more about RS 232 signals then. RS232 Connections That WORK Connecting Devices or Converters. Brainboxes 1 Port RS422485 USB to Serial Adapter US324 USB to Serial adapter providing one RS422485 serial port. Data transfer rates up to 921,600 baud rates and. Powered Serial Port Pinout Db9Dont use a gender changer on the adapter as it wont work. There are also All in one adapters that dont require a seperate null modem cable that are known to work. They are available on Ebay. If you have a V6, the RS2. I have shown the pinout diagram in this post http www. Download the STB EROM Upgrade tool for your particular box from here Sky. Box Sky. BoxHRHRDownload your firmware from Skybox. Sky. Box Sky. Boxor Yojiatech. Downloads. Some boxes may be clones. The firmware for cloned boxes can be downloaded from hddvbsw. HRHRFiles are compressed, so will need to be unpacked. If your version of Windows doesnt have an unpacking program built in, then you can use a free program such as 7 zip, or IZArc, or you can use Win. Rar Win. Rar Downloads Tech. KingsHRHRDouble click the compressed upgrade tool file. The NanoPi NEOabbreviated as NEO is another fun board developed by FriendlyARM for makers, hobbyists and fans. Hardware Spec. CPU Allwinner H3, Quadcore CortexA7. It will open in Win. RAR or whatever your chosen program is that opens compressed files. Some programs also add an option in the context menu to extract the file if you right click on the compressed file. Extract to your desktop or location of your choice. You will now have a folder containing these files or maybe a few more. With the box turned off at the mains plug the null modem cable into the box and into your pc. Run the Loader named Erom. Upgrade and select browse. In the pop up box, navigate to where you downloaded the firmware for your box. Note. the firmware will also need to be unpacked first with win Make sure the correct com port is selected. Tick Include Bootloader. Click Next. You will see the following screen. NOTE. if you see the message Opening serial port is failed. Click Back to try again, even before switching the box on, then that usually means that you have selected the wrong COM port. Switch on the power to the box. Within a few seconds you should see Done. After a few seconds you should see the following screens Click on Finished. If your box loads to L0. If you flashed with genuine firmware, try clone firmware. If you flashed with clone firmware, try genuine firmware. Extra notes for those using USB to serial adapters. Most of the cheap USB to serial adapters do not appear to work. Look for adapters that use the Prolific PL2. HX Revision D chipset might also be called PL2. HXD. These adapters still need a null modem cable. If you are using Windows 7 or 8, you just need to plug the adapter in the USB port. The drivers will be automatically installed after a minute or 2. There are also all in one adapters that appear to work. These dont need a seperate null modem cable. If your adapter doesnt work, it may need tweaking in device manager. If you dont see the word Done after a few seconds, you may need to adjust the adapters COM port Advanced settings. Open device manager. Double click on Ports COM LPT. Double click on the adapter to bring up its properties click on the Port settings tab. Click on Advanced. Move the Receive Transmit buffer sliders to the left slightly. Click OK, then OK again to get back to device manager. These are the settings that worked for me. If you still have problems, try moving both sliders further to the left, a bit at a time try flashing again. Port RS4. 224. 85 USB to Serial Adapter US 3. Brainboxes. Description. USB to Serial adapter providing one RS4. Data transfer rates up to 9. FIFOS, coupled with 1. Mbit line drivers deliver uncompromising performance on your laptopPC. Drivers for Windows 3. Operating Systems including Windows 1. Windows 8, Windows 7, Server 2. Vista, Server 2. 00. Windows XP with additional drivers for Raspberry Pi, Mac OS X and Linux. Lifetime warranty and support.