diff --git a/02_runtime_init/Cargo.lock b/02_runtime_init/Cargo.lock
index 0eafa2a5..459f3805 100644
--- a/02_runtime_init/Cargo.lock
+++ b/02_runtime_init/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/03_hacky_hello_world/Cargo.lock b/03_hacky_hello_world/Cargo.lock
index 7f24b65a..89e08fdb 100644
--- a/03_hacky_hello_world/Cargo.lock
+++ b/03_hacky_hello_world/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/04_safe_globals/Cargo.lock b/04_safe_globals/Cargo.lock
index d9a502e1..ad6d3d3f 100644
--- a/04_safe_globals/Cargo.lock
+++ b/04_safe_globals/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/05_drivers_gpio_uart/Cargo.lock b/05_drivers_gpio_uart/Cargo.lock
index 926733bc..f99b9384 100644
--- a/05_drivers_gpio_uart/Cargo.lock
+++ b/05_drivers_gpio_uart/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/06_uart_chainloader/Cargo.lock b/06_uart_chainloader/Cargo.lock
index 5b7f9177..8894ec37 100644
--- a/06_uart_chainloader/Cargo.lock
+++ b/06_uart_chainloader/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/06_uart_chainloader/demo_payload_rpi3.img b/06_uart_chainloader/demo_payload_rpi3.img
index 011abf13..800ae213 100755
Binary files a/06_uart_chainloader/demo_payload_rpi3.img and b/06_uart_chainloader/demo_payload_rpi3.img differ
diff --git a/06_uart_chainloader/demo_payload_rpi4.img b/06_uart_chainloader/demo_payload_rpi4.img
index 12bafdc6..03c84dda 100755
Binary files a/06_uart_chainloader/demo_payload_rpi4.img and b/06_uart_chainloader/demo_payload_rpi4.img differ
diff --git a/07_timestamps/Cargo.lock b/07_timestamps/Cargo.lock
index a03a0377..419159f0 100644
--- a/07_timestamps/Cargo.lock
+++ b/07_timestamps/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/08_hw_debug_JTAG/Cargo.lock b/08_hw_debug_JTAG/Cargo.lock
index e09d7f93..2cbbc3f4 100644
--- a/08_hw_debug_JTAG/Cargo.lock
+++ b/08_hw_debug_JTAG/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/09_privilege_level/Cargo.lock b/09_privilege_level/Cargo.lock
index 84e7bc9e..c10e0785 100644
--- a/09_privilege_level/Cargo.lock
+++ b/09_privilege_level/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/10_virtual_mem_part1_identity_mapping/Cargo.lock b/10_virtual_mem_part1_identity_mapping/Cargo.lock
index abfcc70f..022eb124 100644
--- a/10_virtual_mem_part1_identity_mapping/Cargo.lock
+++ b/10_virtual_mem_part1_identity_mapping/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/11_exceptions_part1_groundwork/Cargo.lock b/11_exceptions_part1_groundwork/Cargo.lock
index 6c3288ea..a00db8e4 100644
--- a/11_exceptions_part1_groundwork/Cargo.lock
+++ b/11_exceptions_part1_groundwork/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/12_integrated_testing/Cargo.lock b/12_integrated_testing/Cargo.lock
index 39f1503e..eac8bcd7 100644
--- a/12_integrated_testing/Cargo.lock
+++ b/12_integrated_testing/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
@@ -39,18 +39,18 @@ checksum = "9ff023245bfcc73fb890e1f8d5383825b3131cc920020a5c487d6f113dfc428a"
 
 [[package]]
 name = "quote"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/13_exceptions_part2_peripheral_IRQs/Cargo.lock b/13_exceptions_part2_peripheral_IRQs/Cargo.lock
index ae9530ef..898e14bc 100644
--- a/13_exceptions_part2_peripheral_IRQs/Cargo.lock
+++ b/13_exceptions_part2_peripheral_IRQs/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
@@ -39,18 +39,18 @@ checksum = "9ff023245bfcc73fb890e1f8d5383825b3131cc920020a5c487d6f113dfc428a"
 
 [[package]]
 name = "quote"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/14_virtual_mem_part2_mmio_remap/Cargo.lock b/14_virtual_mem_part2_mmio_remap/Cargo.lock
index acc61594..4cc5a514 100644
--- a/14_virtual_mem_part2_mmio_remap/Cargo.lock
+++ b/14_virtual_mem_part2_mmio_remap/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
@@ -39,18 +39,18 @@ checksum = "9ff023245bfcc73fb890e1f8d5383825b3131cc920020a5c487d6f113dfc428a"
 
 [[package]]
 name = "quote"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/15_virtual_mem_part3_precomputed_tables/Cargo.lock b/15_virtual_mem_part3_precomputed_tables/Cargo.lock
index 231e7643..b393d6dc 100644
--- a/15_virtual_mem_part3_precomputed_tables/Cargo.lock
+++ b/15_virtual_mem_part3_precomputed_tables/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
@@ -39,18 +39,18 @@ checksum = "9ff023245bfcc73fb890e1f8d5383825b3131cc920020a5c487d6f113dfc428a"
 
 [[package]]
 name = "quote"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/16_virtual_mem_part4_higher_half_kernel/Cargo.lock b/16_virtual_mem_part4_higher_half_kernel/Cargo.lock
index dd78c932..8310ec05 100644
--- a/16_virtual_mem_part4_higher_half_kernel/Cargo.lock
+++ b/16_virtual_mem_part4_higher_half_kernel/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
@@ -39,18 +39,18 @@ checksum = "9ff023245bfcc73fb890e1f8d5383825b3131cc920020a5c487d6f113dfc428a"
 
 [[package]]
 name = "quote"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47aa80447ce4daf1717500037052af176af5d38cc3e571d9ec1c7353fc10c87d"
+checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.85"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a684ac3dcd8913827e18cd09a68384ee66c1de24157e3c556c9ab16d85695fb7"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/X1_JTAG_boot/Cargo.lock b/X1_JTAG_boot/Cargo.lock
index e09d7f93..2cbbc3f4 100644
--- a/X1_JTAG_boot/Cargo.lock
+++ b/X1_JTAG_boot/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "7.0.1"
+version = "7.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5bd95fd055d118f77d4e4d527201b6ceccd13586b19b4dac1270f7081fef0f98"
+checksum = "6d45e46ff04ebb97b52e628261821faba10e190a82130c1467f0a50c21f8b075"
 dependencies = [
  "tock-registers",
 ]
diff --git a/X1_JTAG_boot/jtag_boot_rpi3.img b/X1_JTAG_boot/jtag_boot_rpi3.img
index e705a98f..752daff8 100755
Binary files a/X1_JTAG_boot/jtag_boot_rpi3.img and b/X1_JTAG_boot/jtag_boot_rpi3.img differ
diff --git a/X1_JTAG_boot/jtag_boot_rpi4.img b/X1_JTAG_boot/jtag_boot_rpi4.img
index 109e47ab..3119ef8d 100755
Binary files a/X1_JTAG_boot/jtag_boot_rpi4.img and b/X1_JTAG_boot/jtag_boot_rpi4.img differ