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Firmware m1900
Target
Purpose
Versions
Structure
Boot process
OS and Libraries
Flashing
Interfaces
The firmware programs ATH542 NAND array which loads bitstream into Altera Cyclone V FPGA. Location of this chip:
- in P3X and P3S, it is on OFDM Receiver board
- in other products, the location is unknown
In later Lightbridge implementations, this module was replaced by functionally identical ASIC chip from Artosyn.
The firmware is a synthesis of Lightbridge transmission technology and contains digital part of transmission system.
There are multiple versions, always unencrypted.
| Marking | Packages | Timestamp | Overview |
|---|---|---|---|
| 01.00.2107 | P3S_FW_V01.01.0008 P3S_FW_V01.01.0009 P3X_FW_V01.01.0006 P3X_FW_V01.01.0008 P3X_FW_V01.01.0009 P3X_FW_V01.01.1003 | 2015-04-30 ... 2015-05-12 | |
| 01.00.2144 | P3S_FW_V01.02.0007 P3S_FW_V01.02.0008 P3S_FW_V01.03.0020 P3S_FW_V01.04.0010 P3S_FW_V01.05.0030 P3S_FW_V01.06.0040 P3S_FW_V01.07.0060 P3S_FW_V01.08.0080 P3S_FW_V01.09.0060 P3S_FW_V01.10.0090 P3X_FW_V01.01.1007 P3X_FW_V01.02.0006 P3X_FW_V01.03.0020 P3X_FW_V01.04.0005 P3X_FW_V01.04.0010 P3X_FW_V01.05.0030 P3X_FW_V01.06.0040 P3X_FW_V01.07.0043_beta P3X_FW_V01.07.0060 P3X_FW_V01.08.0080 P3X_FW_V01.09.0060 P3X_FW_V01.10.0090 WM610_FC550_FW_V01.08.00.92 WM610_FW_V01.08.00.92 | 2015-06-12 ... 2016-11-07 | |
| 01.00.2322 | LBTX_FW_V01.01.00 LBTX_FW_V01.01.0010 LBTX_FW_V01.01.0030 LBTX_FW_V01.01.0031 LBTX_FW_V01.01.0040 LBTX_FW_V01.01.0041 | 2016-03-28 ... 2016-08-18 |
The module contains the FPGA bitstream in a format proprietary to Altera FPGAs.
No analysis of the booting procedure were performed.
The module uses IP core integrated with Altera Quartus synthesis process.
Below are the known methods to program the serial flash chip.
This method requires a working communication between the OFDM board and Camera Top board. Ambarella FW and OFDM MCU must be in working order.
See Flashing firmware via SD-card by official package in camera for details.
This method requires a working communication between the OFDM board and Camera Top board. Ambarella FW and OFDM MCU must be in working order. The firmware module file needs to be unencrypted - flashing a dji-encrypted firmware this way will cause the updated device to crash during startup, and the only way to bring it back to life will be to hook to it directly and flash it using a hardware programmer stick.
See Flashing firmware via SD-card by firmware module in camera for details.
It is possible to buy a programmer for serial flash chips with a clamp which can be put on the IC without de-soldering it.
TODO
This page is created by drone enthusiasts for drone enthusiasts.
If you see a mistake, or you know more about specific subject, or you see an area for improvement for the wiki - create an issue in this project and attach your patch (or describe the change you propose).