60CHAPTER 4: MAINTAINING SOFTWARE
Assert at file: 'vfs_flsh.c', Line: 4549
There are 3 files in this package
SRPU app file error! backup boot file is corrupted!
Select a file to boot from!
the num is 1
the num is 2
File
backup file is
There are 3 files in this package
SRPU app file <<FAB64R.app>> is...OK
Decompress
Image...............................................................
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....................................................................
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........................................OK!
Starting at 0x60000...
The primary image name is saved in flash memory, the secondary image name is saved in the EPPROM. However, if you use the display boot command to display the boot image it will only read from flash so only the primary image will be displayed. The secondary boot image name cannot be displayed when there is an image error.
Upgrading Software The Xmodem protocol transmits files through serial ports and supports both Using Xmodem
checksum and CRC. When there is a packet error, retransmission is supported, normally 10 times.
The Xmodem protocol completes transmission by receiving and sending programs. The receiving program first sends the negotiating characters to negotiate the check means. After passing the negotiation, the sending program begins to send the packet.
The receiving program checks the packet according to the negotiated means after receiving a complete packet. The acknowledgement characters are sent after passing the check and then the sending program continues to send the next
