Hey guys,
I had the same problem over here: After finishing successfully the OTA 2.10.405.2 installation on my htc DESIRE I encountered the WIFI problem.
It simply said Wifi: Error
To solve this probleme all you have to do is to reinstall the patch manually but this time using a gold card. (Yeah i forget to use one on my unbranded phone... this could be the source of the wifi error)
1.) reuse your old or create a new gold card
2.) download the patch 2.10.405.2 manually
[ota] htc eu 2.10.405.2 - 2.09.405.8 - xda-developers
3.) rename the OTA_Bravo_HTC_EU_2.10.405.2-2.09.405.8_releaseol2djq7rqarka2ka.zip file to update.zip and copy it to the root of your gold card
3.) reboot in recovery mode with your gold card inside and select the install:update.zip file as explained in the froyo guide
How to update and install Android 2.2 ( Froyo ) on Nexus One – SoftSailor
4.) reboot
5.) enjoy!
Remember: Next time use your gold card before updating the software