Lenovo t420 error 1802

[miqoooo]

hi, i have lenovo t420 and bought Ericsson f3507G, but when i installed the card, the laptop didn't run windows and showed 1802 ERROR.
Please help me to make modem work

[andy2000]

For older Thinkpads, there are workarounds such as flashing a modified BIOS, or the no-1802 program, but I'm not aware of a fix for recent Thinkpads. I would also like to know if anyone has found a way to disable the 1802 error on modern Thinkpads.