Add fpv-sigmastar.md

en/fpv-sigmastar.md

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+# OpenIPC Wiki
+[Table of Content](../README.md)
+
+Instructions for installing OpenIPC firmware on SigmaStar devices (these are notes for now)
+----------------------------------------------------------------
+
+<p align="center">
+  <img src="https://github.com/OpenIPC/wiki/blob/master/images/fpv-logo.jpg?raw=true" alt="Logo"/>
+</p>
+
+
+### SSC338Q + IMX415 + NAND flash board from CamHi
+
+#### Quick note on experiments, will be revised and updated
+
+```
+Here is the sdcard firmware to install openipc to the nand flash.
+
+Connect your SD card to your computer, create a 1 GB partition on it, format it as FAT32 / VFAT.
+In Linux you just need to use the commands fdisk and mkfs.vfat
+Mount disk and unpack ssc338q_initramfs.zip and copy both files to the root directoy.
+The UBOOT and uImage.ssc338q is used for the temporary sdcard system and to gain access to the nand flash.
+
+
+The /dev/mtd0 uses the complete partition size of the nand flash, so this can also be used for a backup.
+But this might take some time, the backup to the sdcard is very slow.
+
+nanddump -f /mnt/mmcblk0p1/backup-nand.bin /dev/mtd0
+
+
+The ssc338q-nand.bin includes the current distributor bootloader and nand ultimate firmware.
+
+flash_eraseall /dev/mtd0
+nandwrite /dev/mtd0 /mnt/mmcblk0p1/ssc338q-nand.bin
+```
+
+#### Buying a device
+
+* https://aliexpress.ru/item/1005002879158570.html