[EX/QFX] How to convert QFX5120-48Y-8C to EX4650-48Y-8C

The 'show chassis hardware' command displays QFX5120-48y-8c instead of EX4650-48Y-8C.
root@SW> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                AAABBBCCCDDD      Virtual Chassis
Routing Engine 0          BUILTIN      BUILTIN           RE-EX4650-48Y-8C
Routing Engine 1          BUILTIN      BUILTIN           RE-QFX5120-48Y-8C
FPC 0            REV 09   650-083242   AAABBBCCCDDD      JNP48Y8C-CHAS
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0                   BUILTIN      BUILTIN           48x25G-8x100G
FPC 1            REV 09   650-083242   AAABBBFFFGGG      JNP48Y8C-CHAS
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0                   BUILTIN      BUILTIN           48x25G-8x100G

root@SW> show virtual-chassis

Virtual Chassis ID: da9b.66a1.a7bd
Virtual Chassis Mode: Enabled
                                                Mstr           Mixed Route Neighbor List
Member ID  Status   Serial No    Model          prio  Role      Mode  Mode ID  Interface
0 (FPC 0)  Prsnt    AAABBBCCCDDD ex4650-48y-8c  255   Master*      N  VC   1  vcp-255/0/54
                                                                           1  vcp-255/0/55
1 (FPC 1)  Prsnt    AAABBBFFFGGG qfx5120-48y-8c 250   Backup       N  VC   0  vcp-255/0/54
                                                                           0  vcp-255/0/55
 
{master:0}
root@SW> request system software add /var/tmp/jinstall-host-ex-4e-x86-64-18.4R1-S2.4-secure-signed.tgz force-host member 1
Verified jinstall-host-ex-4e-x86-64-18.4R1-S2.4-secure-signed signed by PackageProductionEc_2019 method ECDSA256+SHA256
Pushing Junos image package to the host...
Installing /var/tmp/install-media-qfx-5e-junos-18.4R1-S2.4-secure.tgz
Extracting the package ...

============================================
Host OS upgrade is FORCED
Current Host kernel version : 3.14.52-rt50-WR7.0.0.9_ovp
Package Host kernel version : 3.14.52-rt50-WR7.0.0.9_ovp
Current Host version        : 3.1.0
Package Host version        : 3.1.0
Min host version required for applications: 3.0.7
============================================

Validate linux image...
upgrade_platform: -------------------
upgrade_platform: Parameters passed:
upgrade_platform: silent=0
upgrade_platform: package=/var/tmp/tmp.l4dc1kjziOjunos_cli_upg/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz
upgrade_platform: clean install=0
upgrade_platform: on primary   =0
upgrade_platform: clean upgrade=0
upgrade_platform: Need reboot after staging=1
upgrade_platform: -------------------
upgrade_platform:
upgrade_platform: Checking input /var/tmp/tmp.l4dc1kjziOjunos_cli_upg/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz ...
upgrade_platform: Input package /var/tmp/tmp.l4dc1kjziOjunos_cli_upg/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz is valid.
Secure Boot is enforced.
ALLOW:usr/secureboot/grub/BOOTX64.EFI
ALLOW:boot/bzImage-intel-x86-64.bin
ALLOW:boot/initramfs.cpio.gz
Setting up Junos host applications for installation ...
Current junos instance is 0
Installing Host OS ...
upgrade_platform: -------------------
upgrade_platform: Parameters passed:
upgrade_platform: silent=0
upgrade_platform: package=/var/tmp/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz
upgrade_platform: clean install=0
upgrade_platform: on primary   =0
upgrade_platform: clean upgrade=0
upgrade_platform: Need reboot after staging=0
upgrade_platform: -------------------
upgrade_platform:
upgrade_platform: Checking input /var/tmp/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz ...
upgrade_platform: Input package /var/tmp/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz is valid.
Secure Boot is enforced.
ALLOW:usr/secureboot/grub/BOOTX64.EFI
ALLOW:boot/bzImage-intel-x86-64.bin
ALLOW:boot/initramfs.cpio.gz
upgrade_platform: Staging the upgrade package - /var/tmp/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz..
./
./grub/
./grub/grub.efi
./grub/grub.conf
./initramfs.cpio.gz.psig
./upgrade_platform
./bzImage-intel-x86-64.bin.psig
./bzImage-intel-x86-64.bin
./initramfs.cpio.gz
./host-version
./initrd.cpio.gz
./version.txt
./platform_info
./linux.checksum
bzImage-intel-x86-64.bin: OK
initramfs.cpio.gz: OK
version.txt: OK
upgrade_platform: Checksum verified and OK...
1067228 blocks
upgrade_platform: Staging of /var/tmp/jinstall-qfx-5e-junos-18.4R1-S2.4-secure-linux.tgz completed
upgrade_platform: System need *REBOOT* to complete the upgrade
upgrade_platform: Run upgrade_platform with option -r | --rollback to rollback the upgrade

Host OS upgrade staged. Reboot the system to complete installation!

{master:0}
root@SW> request system reboot at now 
Reboot the system at now? [yes,no] (no) yes 
                                                                               
*** FINAL System shutdown message from root@SW ***                       

System going down IMMEDIATELY    

root@SW> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                AAABBBCCCDDD      Virtual Chassis
Routing Engine 0          BUILTIN      BUILTIN           RE-EX4650-48Y-8C
Routing Engine 1          BUILTIN      BUILTIN           RE-EX4650-48Y-8C
FPC 0            REV 09   650-083242   AAABBBCCCDDD      JNP48Y8C-CHAS
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0                   BUILTIN      BUILTIN           48x25G-8x100G
FPC 1            REV 09   650-083242   AAABBBFFFGGG      JNP48Y8C-CHAS
  CPU                     BUILTIN      BUILTIN           FPC CPU
  PIC 0                   BUILTIN      BUILTIN           48x25G-8x100G
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