0. use hardware com port and cisco original blue serial console cable db9/rj45

  1. upgrade viptela from 19.2.4 to 20.9.3 (putty speed 115200)
  copy viptela-20.9.3-x86_64.tar.gz to a fat32 formatted usb flash drive 4gb   
  admin / admin
  vshell
  cp /media/sda1/viptela-20.9.3-x86_64.tar.gz /home/admin
  exit 
  request software install /home/admin/viptela-20.9.3-x86_64.tar.gz reboot

  2. in upgraded viptela 
  copy isr1100be-universalk9.17.06.06a.SPA.bin to a fat32 formatted usb flash drive 4gb    
  admin / admin
  vshell
  df -h (for xxx) 
  cp /xxx/media/sda1/isr1100be-universalk9.17.06.06a.SPA.bin /home/admin
  exit 
  request software install /home/admin/isr1100be-universalk9.17.06.06a.SPA.bin reboot
  
  3. ios xe starts in controller mode (putty speed 9600)
  router# config-transaction
  router(config)# config-register 0x0
  router(config)# commit
  router(config)# end
  router# reload

  rommon 1 > set (to view)
  rommon 2 > DEVICE_MANAGED_MODE=autonomous
  rommon 3 > sync
  rommon 4 > reset 

  rommon 1 > confreg 0x2102
  rommon 2 > reset

  Router#conf t
  Router(config)#config-register 0x2102
  Router# wr
  Router# reload
  
  4. ios xe autonomous mode 
  Router#copy usb0:isr1100be-universalk9.17.06.06a.SPA.bin bootflash:
  Router#(config)#boot system flash isr1100be-universalk9.17.06.06a.SPA.bin
  Router#(config)#license boot level network-advantage
  Router#(config)#platform hardware throughput crypto 250M
  Router#(config)#license feature hseck9
  Router#wr
  Router#sh inv 
  Router#sh ver
  Router#sh env
  Router#sh platform

  PS: upgrading to latest ios xe:
  rommon 1 > set
  PS1=rommon ! >
  CRYPTO_BI_THPUT=10000
  RET_2_RTS=
  MIGRATION_STATUS=SUCCESS
  BIOS_MODE=2
  LICENSE_BOOT_LEVEL=network-advantage,all:esg;
  BOOT=bootflash:packages.conf,1;bootflash:prev_packages.conf,1;
  DEVICE_MANAGED_MODE=autonomous  <----------------- 1.
  UPDATE_CAPSULE=0                <----------------- 2. если прокачали до нового иоса хер откатишься на старый пока не сделать это!
  BSI=0
  RANDOM_NUM=971613900
  RET_2_RCALTS=1776258221
  rommon 2 > confreg 0x2102


  (C)2026 olgerd@gmail.com

  https://www.cisco.com/c/en/us/support/docs/routers/vedge-router/215680-how-to-recover-unbootable-vedge-5000-or.html
  https://www.reddit.com/r/Cisco/comments/1dq3bwu/cisco_isr11004g_from_viptela_vedge_to_ios_xe/
  https://community.cisco.com/t5/routing-and-sd-wan/setting-up-factory-default-device-using-webui-for-cisco-isr1100/td-p/5088788
  https://community.cisco.com/t5/routing-and-sd-wan/convert-isr1100-4g-from-viptela-vedge-os-20-9-8-to-ios-xe-17-9-8/m-p/5348714
  https://www.synacktiv.com/en/publications/pentesting-cisco-sd-wan-part-1-attacking-vmanage.html
  https://community.cisco.com/t5/networking-knowledge-base/cisco-isr-amp-asr-1k-routers-ios-xe-firmware-upgrade-install/ta-p/4426457