I tried to use this method to improve the dtc version.
$ sudo apt install ./device-tree-compiler_1.4.7-1_amd64.deb
The result is disappointing：
Reading package lists... Done Building dependency tree
Reading state information... Done Note, selecting 'device-tree-compiler' instead of './device-tree-compiler_1.4.7-1_amd64.deb' device-tree-compiler is already the newest version (1.4.7-1). 0 upgraded, 0 newly installed, 0 to remove and 14 not upgraded.
$ dtc -v
Version: DTC 1.4.0-gf345d9e4
Can anyone tell me why this is?