Yealink T42G Phone stuck at Welcome

[jolouis]

You can try contacting your retailer and getting them to request recovery firmware from Yealink, just in case it's a corrupted firmware issue. (Yealink doesn't provide this directly to end users for security reasons, but the reseller if they are in the proper channel should be able to get it on your behalf).

If that does not work and the warranty period is passed then could be potential hardware failure though in our experience that would be pretty rare (unless a user did something silly like dump coffee on it etc).