Here is a tutorial to get cricket working on the EVO! Using the Jiminy (for Cricket) rom.

The Jiminy rom is the best for cricket because it has a modified MMS.apk along with alot of other things to make it easier for us! Thanks deathsled

You need to have your evo Rooted:http://unrevoked.com/#evo
You also need to install Jiminy (for Cricket):http://forum.xda-developers.com/showthread.php?t=784776

You also need :
CD MA WORKSHOP. I cant provide a link so find it on google
QPST 2.7_355:http://www.mediafire.com/?giv1y4qd02k6y63
HTC DIAG Drivers:http://www.mediafire.com/?h83292u2f3jdpo4
MSL Reader: Its in the market – here is apk tho:http://www.mediafire.com/?5kocsnsw45lbhl1
Nationwidedata PRL (Newest of 1/29/11):http://www.mediafire.com/?cp3najdla6tctm3
cricket_web_mms_v10.zip:http://www.mediafire.com/?5fq4hyde5i5z69d
Autostart: on the market but here is apk:http://www.mediafire.com/?z6icza0qx3i38ls
Any Cut: Also on market but here is apk:http://www.mediafire.com/?fmoliwowccxx61b
APN Backup & restore: again on the market but here is apk:http://www.mediafire.com/?fmoliwowccxx61b

After you root the phone and install jiminy get MSL reader from wifi and the market or install the apk I provided.
Open MSL reader and right down your MSL code.

1. Dial ##DIAG# (##3424) on your phone should go black and show a computer or something
2. Now plug your evo to the computer and it will try and find the drivers but it will fail or ask you to locate the drivers manually so make sure you remember where you unzipped the files

3.Open CDMA workshop select the COM port your evo is on click “Connect” then “read”
4.Click the “security” tab under SPC type in your MSL code and click SPC> Send It should say Phone unlocked or something.
5.Then replace your MSL code with all zeros 000000 and click SPC>Write it should say completed or written or something I don’t really remember cdma workshop.sry
6.Exit out and restart your evo

7. Open QPST Configuration Click On The Ports Tab and Add New Port ( Make Sure Show Serial and Usb/QC Diag Ports Only is Unchecked) and Add The Port Of Your evo. Then select the new port that was added. at the top then go to Start clients> Service Programing

8. in QPST Click "read from phone" then click the "CDMA" tab change the settings as needed:

9. Click “Roam” and select the nationwidedata.prl or another cricket prl
10. click “Display” replace banner with “Cricket”
11. go to M.IP Delete all the profiles, Click “add”
Enter the settings:
Where the black box is that’s where your number goes

12. Click “ok” then change settings in the M.IP tab

13: click “PPP Config” tab Change the IP addresses and compression settings to the ones below

14. Click “Um” again change the IP’s and compression
Tethered NAI yourfullphone#@mycricket.com
User ID: yourfullphone#@mycricket.com
Password: cricket
NOTE: if NAI, User ID, or Password have black with red X’s in it select the box and press Ctrl+D

15: click “AN”
Tethered NAI yourfullphone#@mycricket.com
User ID: yourfullphone#@mycricket.com
Password: cricket

16: click “Write to phone”
17: Your phone will restart and when it comes back wait for it to completely load up
3G should come and if you dial 611 it should say “Welcome to cricket”
If not try to do a *228 if it fails do a *22804 if no luck check the settings above make sure everything is right.
18. install Autostart from the market or use the APK I provided
19. install Any Cut from the market or use the APK I provided
20. Open Any Cut click “Activity” then Proxy Settings press your home button then click Proxy settings
Host: Wap.mycricket.com
Port: 8080
“Save”
21. install APN Backup&Restore from the market or use the APK I provided
Click backup then connect your evo to the pc and mount SD then find the APN Backup restore folder it made then right click the xml it made and open it with notepad.
Delete everything inside it and replace it with:
<?xml version=’1.0’ encoding=’UTF-8’ standalone=’yes’ ?>
<apns count="1">
<apn name="CDMA-MMS" numeric="46605" mcc="466" mnc="05" apn="mms" user="your10digit#[email protected]" server="NA" password="cricket" proxy="wap.mycricket.com" port="8080" mmsproxy="null" mmsport="null" mmsprotocol="null" mmsc="http://mms.mycricket.com/mycricket/mms.php" type="mms" />
</apns>

Save it and while your mounted to the sd go back to the root of your sd card and copy the cricket_web_mms_v10.zip on to the sd then unplug your evo.
22. go back to apn backup & restore and delete APNs then Restore APNs and restore the one you edited
23. turn off your phone then install the cricket_web_mms_v10.zip from recovery
24. when it turns a thing should come up make sure you click “Allow”
25. test your internet and picture messaging everything should work.

Remember this is a umm beta this is my first tutorial for the evo so if im missing anything or if something is wrong, sorry let mi kno and I will fix it.. Enjoy and good luck