RunUO 2.1 with an old client, for example 1.26.4

If im using client v2.0.3 i can to log ingame
but if im using 1.26.4 just can't

1.26.4 just get me a message Welcome to ultima online

im checked packets


ClientQuery have a same entry like on 2.0.3
here is it

So, how i can modify Client Query(34) or maybe Movemobile(20) for supporting 1.26.4 loging?

For client versions below 2.0 you must omit the sending of packet 0xBF:0x06 which is the the"Map" packet. This fixed length packet is unknown to the client and will freeze the network stream.

Once in game, there are quite a few other packets that will need to be omitted. Any fixed length packets that are post client version must be removed. Most of the BF packets (if not all, i don't recall) are not supported.

You may find this packet guide from 2000 helpful. It does contain some post 1.26.4 packets, but it's a much better starting point than the modern packet guides:
ftp://joinuo.com/Documents/Packet%20Gui ... ackets.htm

all packets 0xBF just removed but still can't login
How i can fing packets with fixed length?