it fixed it for me..
[ROOT][GUIDE] HBoot 2.02/2.10 S-OFF - Fly Like a Kite Edition - Updated 12/15/10 - xda-developers
Q: My 4g Doesnt work
A: Was it broken prior to the s-off, what steps did you take. Are you running AOSP ROM or Another kernel?, Did you try a different rom? What version is your phone? Do you have SwitchPro Widget installed? (uninstall it), Did you try to run unrevoked3 prior to this? After flashing the radios and stock kernel based rom did you do a data and prl update? Does the mac behind your battery match whats in about phone (4g has to be on to see mac) Also try the tree.xml fix posted
adb shell
ls /data/misc/wimax/
look for a file with your macaddress ending in .tree.xml. you want to move that to another location so it gets regenerated. (the following command basically renames it.)
mv /data/misc/wimax/(Your-mac-address).tree.xml /data/misc/wimax/(Your-mac-address).tree.xml.old
4. Start 4G may not connect
5. Do a prl/profile update
6. Power off the phone and power it back on. Try it
7. PRL/Profile. Try it
Q: 4G is still broke.
A: Check your RSA keys
adb shell
cat /dev/mtd/mtd0 | grep RSA
returned output show appear as this:
# cat /dev/mtd/mtd0 | busybox grep RSA
cat mtd0 | busybox grep RSA
RSA-REQUEST
RSA-REPLY
RSA-REJECT
RSA-ACK
RSA-1024
RSA-REQUEST
RSA-REPLY
RSA-REJECT
RSA-ACK
RSA-1024
RSA
ReRSA
RSA requests
RSA replies
-----BEGIN RSA PRIVATE KEY-----
-----END RSA PRIVATE KEY-----
#
It should look just like the above
the important lines are BEGIN RSA PRIVATE KEY and END RSA PRIVATE KEY.
If you have those two lines, your keys are still likely to be intact.
If those two lines are missing, your keys are likely missing.
/dev/mtd/mtd0 is where the wimax image is stored.