diff --git a/eive_tmtc/pus_tc/devs/plpcdu.py b/eive_tmtc/pus_tc/devs/plpcdu.py
index dbbe017..0a0b281 100644
--- a/eive_tmtc/pus_tc/devs/plpcdu.py
+++ b/eive_tmtc/pus_tc/devs/plpcdu.py
@@ -19,9 +19,9 @@ from tmtccmd.tc.pus_11_tc_sched import (
     create_time_tagged_cmd,
 )
 from tmtccmd.tc.pus_200_fsfw_modes import pack_mode_data, Mode, Subservice
-from tmtccmd.tc.pus_20_params import (
+from tmtccmd.tc.pus_20_fsfw_params import (
     pack_scalar_double_param_app_data,
-    pack_fsfw_load_param_cmd,
+    crate_fsfw_load_param_cmd,
     pack_boolean_parameter_app_data,
 )
 from tmtccmd.logging import get_console_logger
@@ -427,7 +427,7 @@ def pack_wait_time_cmd(q: DefaultPusQueueHelper, param_id: int, print_str: str):
         unique_id=param_id,
         parameter=wait_time,
     )
-    q.add_pus_tc(pack_fsfw_load_param_cmd(app_data=param_data))
+    q.add_pus_tc(crate_fsfw_load_param_cmd(app_data=param_data))
 
 
 def pack_failure_injection_cmd(q: DefaultPusQueueHelper, param_id: int, print_str: str):
@@ -435,7 +435,7 @@ def pack_failure_injection_cmd(q: DefaultPusQueueHelper, param_id: int, print_st
     param_data = pack_boolean_parameter_app_data(
         object_id=PL_PCDU_ID, domain_id=0, unique_id=param_id, parameter=True
     )
-    q.add_pus_tc(pack_fsfw_load_param_cmd(app_data=param_data))
+    q.add_pus_tc(crate_fsfw_load_param_cmd(app_data=param_data))
 
 
 def pack_pl_pcdu_mode_cmd(
diff --git a/eive_tmtc/tmtc/com/syrlinks_handler.py b/eive_tmtc/tmtc/com/syrlinks_handler.py
index 1e27130..d3e224f 100644
--- a/eive_tmtc/tmtc/com/syrlinks_handler.py
+++ b/eive_tmtc/tmtc/com/syrlinks_handler.py
@@ -23,7 +23,8 @@ from tmtccmd.tc.pus_3_fsfw_hk import (
     create_disable_periodic_hk_command,
 )
 from spacepackets.ecss.tc import PusTelecommand
-from tmtccmd.tc.pus_200_fsfw_modes import pack_mode_data, Mode, create_mode_command
+from tmtccmd.tc.pus_200_fsfw_modes import Mode, create_mode_command
+from tmtccmd.tc.pus_20_fsfw_params import pack_scalar_u8_parameter_app_data, create_load_param_cmd
 from eive_tmtc.config.object_ids import SYRLINKS_HANDLER_ID
 import struct
 
@@ -45,6 +46,7 @@ class OpCode:
     NORMAL_RX_AND_TX_CW = "nml_carrier_wave"
     NORMAL_RX_AND_TX_LOW_DATARATE = "nml_low_datarate"
     NORMAL_RX_AND_TX_HIGH_DATARATE = "nml_high_datarate"
+    UPDATE_DEFAULT_DATARATE = "update_default_datarate"
     HK_RX_REGS = "hk_rx_regs"
     ENABLE_HK_RX_REGS = "enable_hk_rx"
     DISABLE_HK_RX_REGS = "disable_hk_rx"
@@ -64,6 +66,7 @@ class Info:
     NORMAL_RX_AND_TX_DEFAULT_DATARATE = "NORMAL RX and TX, TX with default datarate"
     NORMAL_RX_AND_TX_LOW_DATARATE = "NORMAL RX and TX, TX with low datarate"
     NORMAL_RX_AND_TX_HIGH_DATARATE = "NORMAL RX and TX, TX with high datarate"
+    UPDATE_DEFAULT_DATARATE = "Update default datarate"
     HK_RX_REGS = "Request RX register set"
     HK_TX_REGS = "Request TX register set"
     ENABLE_HK_RX_REGS = "Enable periodic RX register HK"
@@ -101,8 +104,8 @@ class Submode(enum.IntEnum):
     RX_AND_TX_CW = 4
 
 
-class Datarate(enum.Enum):
-    LOW_RATE_MODULATION_BPSK = (0,)
+class Datarate(enum.IntEnum):
+    LOW_RATE_MODULATION_BPSK = 0
     HIGH_RATE_MODULATION_0QPSK = 1
 
 
@@ -116,6 +119,7 @@ def add_syrlinks_cmds(defs: TmtcDefinitionWrapper):
     oce.add(OpCode.NORMAL_RX_AND_TX_CW, Info.NORMAL_RX_AND_TX_CW)
     oce.add(OpCode.NORMAL_RX_AND_TX_LOW_DATARATE, Info.NORMAL_RX_AND_TX_LOW_DATARATE)
     oce.add(OpCode.NORMAL_RX_AND_TX_HIGH_DATARATE, Info.NORMAL_RX_AND_TX_HIGH_DATARATE)
+    oce.add(OpCode.UPDATE_DEFAULT_DATARATE, Info.UPDATE_DEFAULT_DATARATE)
     oce.add(OpCode.HK_RX_REGS, Info.HK_RX_REGS)
     oce.add(OpCode.HK_TX_REGS, Info.HK_TX_REGS)
     oce.add(OpCode.TX_STATUS, Info.TX_STATUS)
diff --git a/setup.cfg b/setup.cfg
index 28e3107..5ce408e 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -27,8 +27,8 @@ classifiers =
 
 [options]
 install_requires =
-	tmtccmd @ git+https://github.com/robamu-org/tmtccmd@v4.0.0a2
-	# tmtccmd @ git+https://github.com/robamu-org/tmtccmd@23fe1dff5e035#egg=tmtccmd
+	# tmtccmd @ git+https://github.com/robamu-org/tmtccmd@v4.0.0a2
+	tmtccmd @ git+https://github.com/robamu-org/tmtccmd@c978286a856a2f3a59efc96887dd15c2c17bac6e#egg=tmtccmd
 packages = find:
 python_requires = >=3.10
 include_package_data = True