diff --git a/audio/raven/cs35l41/fw/R-cs35l41-dsp1-spk-prot.bin b/audio/raven/cs35l41/fw/R-cs35l41-dsp1-spk-prot.bin
index 20a3ca3..81154a1 100644
--- a/audio/raven/cs35l41/fw/R-cs35l41-dsp1-spk-prot.bin
+++ b/audio/raven/cs35l41/fw/R-cs35l41-dsp1-spk-prot.bin
Binary files differ
diff --git a/audio/raven/cs35l41/fw/cs35l41-dsp1-spk-prot.bin b/audio/raven/cs35l41/fw/cs35l41-dsp1-spk-prot.bin
index 0e725b4..a2e0cd6 100644
--- a/audio/raven/cs35l41/fw/cs35l41-dsp1-spk-prot.bin
+++ b/audio/raven/cs35l41/fw/cs35l41-dsp1-spk-prot.bin
Binary files differ
diff --git a/audio/raven/cs35l41/fw/readme.md b/audio/raven/cs35l41/fw/readme.md
index 125daf9..cda3a13 100644
--- a/audio/raven/cs35l41/fw/readme.md
+++ b/audio/raven/cs35l41/fw/readme.md
@@ -1,8 +1,8 @@
-# R4 Protect Tune - Top And Bottom Speakers Build 21.4.0
+# R4 Protect Tune - Top And Bottom Speakers Build 21.6.0
 
 ## Tune Details
 
-- **File name**: r4_21.4.0
+- **File name**: r4_21.6.0
   - _Device_: CS35L41 revB2
   - _Firmware Version_
     - _Protect_: Playback 6.47.0
@@ -16,11 +16,42 @@
 
 ### Changelog
 
-#### 21.2.4.0
+#### 21.6.0
+
+- Top Speaker protect tune 21.5.0 → 21.6.0
+  - Recharacterized and retuned to include new limit samples
+  - Wael retuned XMAX gain to -24.3 (from -24.5) for slightly safer XMAX
+
+#### 21.5.1
+
+- Bottom speaker protect tune uprev 21.5.0 → 21.5.1
+  - Recharacterized and retuned to include new limit samples
+- All top speaker tunes remain the same as in 21.5.0
+
+#### 21.5.0
+
+- Updated 21.4.0_withWaelTuning with redc fallback values per customer request.
+  - **Top**: 5.402 ohms
+  - **Bottom**: 5.445 ohms
+- This change in in the protect bins only. Cal and CalAndDiag bins remain the same as in 21.2.4.0_withWaelTuning
+
+#### 21.4.0_withWaelTuning
+
+Updated Top Tuning xmax parameters by Wael
+No changes to bottom
+
+#### 21.4.0
 
 Retune using R4 EVT samples.
 Firmware moved to 6.47.0 for protect, calibration, and diagnostics signal chains.
 
+Changes in firmware between 6.45.0 and 6.47.0:
+
+- Implemented a timeout feature that allows a maximum delay between the start of the BCLK and the start of the LRCLK.
+  If the timeout is exceeded, an error notification is sent to the driver and the command is ignored. This addresses a
+  host-side timing issue for these signals that could lead to a no-audio situation.
+- Fixed an issue where repeated pause/resume commands could cause pops on the output.
+
 #### 21.2.3_ENG
 
 Based on 21.2.2_ENG with HPF cutoff frequencies set to 150Hz for both top and bottom protect tunes
@@ -53,41 +84,35 @@
 **Protect, Calibration, and Diag bins with R Trace**  
  _For use in actual phone_
 
-- Top Speaker
+- #### Top Speaker
   - Top\r4Top_calAndDiag_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
   - Top\r4Top_cal_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
-  - Top\21.4.0_100hpf\r4Top_protect_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.bin
-  - Top\21.4.0_120hpf\r4Top_protect_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.bin
-- Bottom Speaker
+  - Top\21.6.0_100hpf\r4Top_protect_21.6.0_pb6.47.0_17.5dB_100hpf_withRTrace.bin
+- #### Bottom Speaker
   - Bottom\r4Bottom_calAndDiag_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
   - Bottom\r4Bottom_cal_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
-  - Bottom\21.4.0_100hpf\r4Bottom_protect_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.bin
-  - Bottom\21.4.0_120hpf\r4Bottom_protect_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.bin
+  - Bottom\21.5.1_100hpf\r4Bottom_protect_21.5.1_pb6.47.0_17.5dB_100hpf_withRTrace.bin
 
-**Protect & Calibration files without R trace**  
+**Protect & Calibration jsons without R trace**  
  _For use on Lochnagar 2 development platform_
 
-- Top Speaker
-  - Top\21.4.0_100hpf\r4Top_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.json
-  - Top\21.4.0_120hpf\r4Top_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.json
-- Bottom Speaker
-  - Bottom\21.4.0_100hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.json
-  - Bottom\21.4.0_120hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.json
+- #### Top Speaker
+  - Top\21.6.0_100hpf\r4Top_21.6.0_pb6.47.0_17.5dB_100hpf_noRTrace.json
+- #### Bottom Speaker
+  - Bottom\21.5.1_100hpf\r4Bottom_21.5.1_pb6.47.0_17.5dB_100hpf_noRTrace.json
 
 _JSON files contains both protect and calibration deploy groups_
 
 **Labsuite Files**
 
-- Top Speaker
-  - 21.4.0_100hpf\r4Top_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.exported_tuning
-  - 21.4.0_100hpf\r4Top_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.exported_tuning
-  - 21.4.0_120hpf\r4Top_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.exported_tuning
-  - 21.4.0_120hpf\r4Top_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.exported_tuning
-- Bottom Speaker
-  - 21.4.0_100hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.exported_tuning
-  - 21.4.0_100hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.exported_tuning
-  - 21.4.0_120hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.exported_tuning
-  - 21.4.0_120hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.exported_tuning
+- #### Top Speaker
+  - Top\21.6.0_100hpf\r4Top_21.6.0_pb6.47.0_17.5dB_100hpf_noRTrace.exported_tuning
+  - Top\21.6.0_100hpf\r4Top_21.6.0_pb6.47.0_17.5dB_100hpf_withRTrace.exported_tuning
+- #### Bottom Speaker
+  - Bottom\21.5.1_100hpf\r4Bottom_21.5.1_pb6.47.0_17.5dB_100hpf_noRTrace.parameters
+  - Bottom\21.5.1_100hpf\r4Bottom_21.5.1_pb6.47.0_17.5dB_100hpf_withRTrace.parameters
+  - Bottom\21.5.1_100hpf\r4Bottom_protect_21.5.1_pb6.47.0_17.5dB_100hpf_noRTrace.exported_tuning
+  - Bottom\21.5.1_100hpf\r4Bottom_protect_21.5.1_pb6.47.0_17.5dB_100hpf_withRTrace.exported_tuning
 
 **Firmware Files**  
 _Each firmware wmfw is in a folder respective for which type of bin file it is for_
@@ -96,6 +121,12 @@
 - Firmware\Diag\halo_cspl_RAM_diag_revB2_29.49.0.wmfw
 - Firmware\Protect\halo_cspl_RAM_revB2_29.49.0.wmfw
 
+**Additional data**
+
+- r4EvtSpeakerCalAndDiagResults.xlsx
+- CustomerTuneReports\R4_21.5.1_Bottom_CustomerTuneReport.pdf
+- CustomerTuneReports\R4_21.6.0_Top_CustomerTuneReport.pdf
+
 ---
 
 ## Speaker Parameters
@@ -110,6 +141,7 @@
 | **Coil co-efficiency (Tk)**         | 0.00393          |
 | **DC Resistance**                   | 6 [Ohms]         |
 | **Resonance Frequency**             | 820 [Hz] +/-7.5% |
+| **ReDC Fallback**                   | 5.402 ohms       |
 
 ### Bottom Speaker
 
@@ -121,3 +153,4 @@
 | **Coil co-efficiency (Tk)**         | 0.00393               |
 | **DC Resistance**                   | 6.1[Ohm]              |
 | **Resonance Frequency**             | 720 [Hz] +/- 10% [Hz] |
+| **ReDC Fallback**                   | 5.445 ohms            |