diff --git a/02_runtime_init/Cargo.lock b/02_runtime_init/Cargo.lock
index c2773baa..1fd03899 100644
--- a/02_runtime_init/Cargo.lock
+++ b/02_runtime_init/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/03_hacky_hello_world/Cargo.lock b/03_hacky_hello_world/Cargo.lock
index 6779dc47..1213b384 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/04_safe_globals/Cargo.lock b/04_safe_globals/Cargo.lock
index 4b5f5c72..bd028f28 100644
--- a/04_safe_globals/Cargo.lock
+++ b/04_safe_globals/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/05_drivers_gpio_uart/Cargo.lock b/05_drivers_gpio_uart/Cargo.lock
index b39e584f..8ac198e1 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/06_uart_chainloader/Cargo.lock b/06_uart_chainloader/Cargo.lock
index e390c959..98f3ca1c 100644
--- a/06_uart_chainloader/Cargo.lock
+++ b/06_uart_chainloader/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/06_uart_chainloader/demo_payload_rpi3.img b/06_uart_chainloader/demo_payload_rpi3.img
index c3bf0755..7b482d7b 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 03cddd9e..e7b0e939 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 098fe83c..663d313c 100644
--- a/07_timestamps/Cargo.lock
+++ b/07_timestamps/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/08_hw_debug_JTAG/Cargo.lock b/08_hw_debug_JTAG/Cargo.lock
index c9363678..884ec5f0 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/09_privilege_level/Cargo.lock b/09_privilege_level/Cargo.lock
index 606b7819..1703eebe 100644
--- a/09_privilege_level/Cargo.lock
+++ b/09_privilege_level/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/10_virtual_mem_part1_identity_mapping/Cargo.lock b/10_virtual_mem_part1_identity_mapping/Cargo.lock
index a3e7eb26..d0180466 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/11_exceptions_part1_groundwork/Cargo.lock b/11_exceptions_part1_groundwork/Cargo.lock
index 6fca1252..d25b6b78 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/12_integrated_testing/Cargo.lock b/12_integrated_testing/Cargo.lock
index b8780bfe..c4d231f9 100644
--- a/12_integrated_testing/Cargo.lock
+++ b/12_integrated_testing/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
@@ -24,9 +24,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.27"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
@@ -39,18 +39,18 @@ checksum = "220eb94f40665452ab6114bf8a8d86aa1fd41c6dbfaa4ab71b5912c8adb80389"
 
 [[package]]
 name = "quote"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/13_exceptions_part2_peripheral_IRQs/Cargo.lock b/13_exceptions_part2_peripheral_IRQs/Cargo.lock
index a66aa8f5..db1cd2db 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
@@ -24,9 +24,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.27"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
@@ -39,18 +39,18 @@ checksum = "220eb94f40665452ab6114bf8a8d86aa1fd41c6dbfaa4ab71b5912c8adb80389"
 
 [[package]]
 name = "quote"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 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 d2aaae6e..41426eba 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
@@ -24,9 +24,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.27"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
@@ -39,18 +39,18 @@ checksum = "220eb94f40665452ab6114bf8a8d86aa1fd41c6dbfaa4ab71b5912c8adb80389"
 
 [[package]]
 name = "quote"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 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 5801a6b7..6cb12baa 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
@@ -24,9 +24,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.27"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
@@ -39,18 +39,18 @@ checksum = "220eb94f40665452ab6114bf8a8d86aa1fd41c6dbfaa4ab71b5912c8adb80389"
 
 [[package]]
 name = "quote"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 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 98edacde..d2e5b0d6 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 = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
@@ -24,9 +24,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.27"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0d8caf72986c1a598726adc988bb5984792ef84f5ee5aa50209145ee8077038"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
@@ -39,18 +39,18 @@ checksum = "220eb94f40665452ab6114bf8a8d86aa1fd41c6dbfaa4ab71b5912c8adb80389"
 
 [[package]]
 name = "quote"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3d0b9745dc2debf507c8422de05d7226cc1f0644216dfdfead988f9b1ab32a7"
+checksum = "38bc8cc6a5f2e3655e0899c1b848643b2562f853f114bfec7be120678e3ace05"
 dependencies = [
  "proc-macro2",
 ]
 
 [[package]]
 name = "syn"
-version = "1.0.73"
+version = "1.0.80"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f71489ff30030d2ae598524f61326b902466f72a0fb1a8564c001cc63425bcc7"
+checksum = "d010a1623fbd906d51d650a9916aaefc05ffa0e4053ff7fe601167f3e715d194"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/X1_JTAG_boot/Cargo.lock b/X1_JTAG_boot/Cargo.lock
index c9363678..884ec5f0 100644
--- a/X1_JTAG_boot/Cargo.lock
+++ b/X1_JTAG_boot/Cargo.lock
@@ -4,9 +4,9 @@ version = 3
 
 [[package]]
 name = "cortex-a"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d25a057b35117d030453cd322f7adbdd331e886bc5bde46cdae656952c4feba6"
+checksum = "509fc35485a2b4ddbacabe0bf2212cdfff88da93658608e5cc651afcb75b7733"
 dependencies = [
  "tock-registers",
 ]
diff --git a/X1_JTAG_boot/jtag_boot_rpi3.img b/X1_JTAG_boot/jtag_boot_rpi3.img
index 672a6640..be80f810 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 70eb0f3b..f09f82c3 100755
Binary files a/X1_JTAG_boot/jtag_boot_rpi4.img and b/X1_JTAG_boot/jtag_boot_rpi4.img differ