diff --git a/tclcheck_findver.py b/tclcheck_findver.py
index 301e66f..047ce0f 100755
--- a/tclcheck_findver.py
+++ b/tclcheck_findver.py
@@ -7,32 +7,28 @@
 
 import sys
 
-from requests.exceptions import RequestException, Timeout
+from tcllib import ansi, argparser, devlist
+from tcllib.devices import MobileDevice
+from tcllib.requests import RequestRunner, CheckRequest, ServerVoteSelector, \
+        write_info_if_dumps_found
 
-import tcllib
-import tcllib.argparser
-from tcllib import ansi
-from tcllib.devices import DesktopDevice, MobileDevice
-
-
-dev = MobileDevice()
-fc = tcllib.FotaCheck()
 
 dpdesc = """
     Finds all valid OTA updates for a given PRD. Scan range can be set by
     startver and endver switches.
     """
-dp = tcllib.argparser.DefaultParser(__file__, dpdesc)
+dp = argparser.DefaultParser(__file__, dpdesc)
 dp.add_argument("prd", help="CU Reference #, e.g. PRD-63117-011")
 dp.add_argument("startver", help="Beginning of scan range", nargs="?", default="AAA000")
 dp.add_argument("endver", help="End of scan range", nargs="?", default="AAZ999")
 args = dp.parse_args(sys.argv[1:])
 
-fc.curef = args.prd
+dev = MobileDevice()
+dev.curef = args.prd
 start_ver = args.startver
 end_ver = args.endver
 
-print("Valid firmwares for model {} (between {} and {}):".format(fc.curef, start_ver, end_ver))
+print("Valid firmwares for model {} (between {} and {}):".format(dev.curef, start_ver, end_ver))
 
 cur_ver = start_ver
 allvers = []
@@ -53,21 +49,22 @@ while True:
             break
     cur_ver = "{:3}{:03d}".format("".join(letters), num)
 
+runner = RequestRunner(ServerVoteSelector(), https=False)
+runner.max_tries = 20
+
 done_count = 0
 total_count = len(allvers)
 for fv in allvers:
     done_count += 1
     print("Checking {} ({}/{})".format(fv, done_count, total_count))
     print(ansi.UP_DEL, end="")
-    try:
-        dev.fwver = fv
-        fc.reset_session(dev)
-        check_xml = fc.do_check(dev, https=False, max_tries=20)
-        curef, fv, tv, fw_id, fileid, fn, fsize, fhash = fc.parse_check(check_xml)
-        txt_tv = tv
-        print("{}: {} ⇨ {} {}".format(curef, fv, txt_tv, fhash))
-    except (SystemExit, RequestException, Timeout) as e:
-        continue
+    dev.fwver = fv
+    chk = CheckRequest(dev)
+    runner.run(chk)
+    if chk.success:
+        chkres = chk.get_result()
+        txt_tv = chkres.tvver
+        print("{}: {} ⇨ {} {}".format(curef, fv, txt_tv, chkres.filehash))
 
 print("Scan complete.")
-tcllib.FotaCheck.write_info_if_dumps_found()
+write_info_if_dumps_found()