AR2901 upgrade version to Version 5.20 Release 2105 failed.
<quidway> bootrom update file ar29-vrp520-r2105p02.bin
This command will update bootrom file,Continue? [Y/N]:y
Now updating bootrom,please wait...
Basic bootrom file error!
Extended bootrom file error!
Failed to update bootrom of system.
<quidway>boot-loader file ar29-vrp520-r2105p02.bin main
The specified file is invalid!
1,use binary mode(FTP) transfer new versionfile, upgeade fail again;
2,check release notes, AR2901 use AR19-VRP520-R2105.BIN, not ar29-vrp520-r2105p02.bin.
Use the file AR19-VRP520-R2105.BIN upgrade successful.
1,file error, need use binary mode transfer version file to device.
2,used wrong file, maybe another version file.
We should read release notes before upgrade.