How can I solve the problem that the flash file in the Cisco2611 router is overwritten?

The following problems may occur when you contact the Cisco 2611 router. The flash memory problem of the Cisco 2611 router has always been a concern of everyone. Today, we are mainly trying to solve this problem, we hope that the file in flash of the Cisco 2611 router will be overwritten to solve the problem. With a Super Terminal, within 30 seconds after the vro is started, press crtl + break to enter chinabao> at this time, you can upgrade the operating system of the Cisco 2611 vro. download the ios system of the Cisco router from ftp, copy tftp flash about 5 MB, download the new image from the tftp server to the flash reset, and restart. OK

1. Start the instance and press Ctrl + Break to go to Rom monitor.
2,> confreg 0x2142
3.> reset Cisco 2611 router)
4. In the Setup mode, press Ctrl + C.
5. Enter enable in user mode.
6. In privileged mode, enter copy start run to restore the original configuration.
7. Enter the config ter to enter the global configuration mode.
8. Enter enable secret *** to define the new authorization password.
9. Enter config-register 0x2102 to restore the register value.
10. input line con 0
11. Enter password *** to define the new console password.
12. Press Ctrl + Z to the privileged mode.
13. Input copy run start to back up new configurations.
14. Enter reload and restart
15. enter with a new password

I would like to ask you about the Cisco 2611 vro3232 M memory, 16 M FLASH memory. To configure VPDN, the minimum version of IOS is used. I have a c2600-is-mz.120-8.bin. However, VPDN-GROUP cannot be configured. The ADSL feature is supported in the IP/ADSL Image ("y7" image) for the Cisco 1700 Series. cisco 2600/3600/3700 series routers require a plus ios image for ADSL if using 12.2T. may I ask you to Cisco 2611 vro3232 M memory, 16 M FLASH memory. To configure VPDN, the minimum version of IOS is used. I have a c2600-is-mz.120-8.bin. However, VPDN-GROUP cannot be configured.