The Data Packet With Type-0x96- Returned: Was Misformatted
The error message "The data packet with type (0x96) returned was misformatted" is a specific error (code 275) that occurs when using SPD Upgrade Tool or ResearchDownload to flash firmware onto Spreadtrum (Unisoc) based devices. It indicates a communication mismatch or data corruption during the flashing process, often occurring at the FDL2 stage. Potential Causes
- CBOR (Concise Binary Object Representation) – includes built-in length encoding.
- ProtoBuf (Protocol Buffers) – parsers reject malformed data automatically.
- TLV with explicit Length for every field.
4. Forensic Analysis Steps
To resolve this issue, perform the following analysis on the raw hex dump of the packet. the data packet with type-0x96- returned was misformatted
- Errors in Transmission: Noise on the communication channel can corrupt packets, leading to errors in the data.
- Software Bugs: Issues in the firmware or software of the device or the host system can cause packets to be incorrectly formatted.
- Hardware Malfunctions: Faulty hardware, either on the device side or the host side, can lead to incorrect packet formation or corruption during transmission.
- Incompatible or Outdated Drivers: In the case of USB communications, outdated or incompatible device drivers can lead to incorrect handling of packets.
4.2 Transmission Medium Corruption
- Noise on serial lines: RS-485 runs in factories with heavy EMI from motors; a single corrupted byte can turn a valid length field into an absurd value.
- RF interference: LoRa or Zigbee packets subject to fading and multipath interference.
- CRC false negatives: Extremely rare, but possible with weak checksums (e.g., 8-bit XOR).