Update TBsync and EAS max version

info.md

Information

This Gist describes how to update the max version number of TBSync and EAS Provider above ESR version.

Attention: This process does not ensure the Extension works after update, if breaking changes appear.

Before you are able to execute the script below you need to download the latest version of TBsync and any provider you like to patch from the list below:

• TBsync
• EAS

Afterwards update the script matching the version numbers.

Dependencies

• zip
• unzip
• jq >= 1.8.1 (maybe lower)

update_tbsync.sh

#!/usr/bin/env bash
pwd

# UPGRADE IF NECESSARY
LATEST_TBSYNC_VERSION=4.16
LATEST_EAS_VERSION=4.17
TARGET_TB_VERSION=149

## REGEXES
REPLACE_SET_ATTRIBUTE='s|(\w*)\.setAttribute\("([^"]+)", false\);|\1.removeAttribute("\2");|'
INSERT_MENUITEM='/^\.abMenuItem/a \  --menuitem-icon: url("chrome://tbsync/content/skin/error16.png");'

if [ -f tbsync-$LATEST_TBSYNC_VERSION-tb.xpi ]; then
  # Create Target xpi
  cp tbsync-$LATEST_TBSYNC_VERSION-tb.xpi tbsync-$LATEST_TBSYNC_VERSION.1-tb.xpi

  unzip -qq tbsync-$LATEST_TBSYNC_VERSION-tb.xpi -d tbsync_src
  jq ".applications.gecko.strict_max_version=\"$TARGET_TB_VERSION.*\" | .version=\"$LATEST_TBSYNC_VERSION.1\"" tbsync_src/manifest.json > manifest.json
  if [ $? -ne 0 ]; then
    echo "Error while updating TBsync manifest. Please update tbsync_src/manifest.json manually"
  fi
  # issue #772 implementations
  ## Create strucuture
  mkdir -p content/manager
  mkdir -p content/skin
  cp tbsync_src/content/manager/accounts.js content/manager/accounts.js
  cp tbsync_src/content/skin/ab.css content/skin/ab.css

  ## Replace content
  sed -E -i "$REPLACE_SET_ATTRIBUTE" content/manager/accounts.js
  sed -E -i "$INSERT_MENUITEM" content/skin/ab.css

  zip -u tbsync-$LATEST_TBSYNC_VERSION.1-tb.xpi manifest.json
  zip -u tbsync-$LATEST_TBSYNC_VERSION.1-tb.xpi content/manager/accounts.js
  zip -u tbsync-$LATEST_TBSYNC_VERSION.1-tb.xpi content/skin/ab.css
else
  echo "No TBSync Extension Provided. Skipping!"
fi

if [ -f provider_fur_exchange_activesync-$LATEST_EAS_VERSION-tb.xpi ]; then
  # Create Target xpi
  cp provider_fur_exchange_activesync-$LATEST_EAS_VERSION-tb.xpi provider_fur_exchange_activesync-$LATEST_EAS_VERSION.1-tb.xpi
  unzip -qq provider_fur_exchange_activesync-$LATEST_EAS_VERSION-tb.xpi -d eas_src
  jq ".applications.gecko.strict_max_version=\"$TARGET_TB_VERSION.*\" | .version=\"$LATEST_EAS_VERSION.1\"" eas_src/manifest.json > manifest.json 2>&1
  if [ $? -ne 0 ]; then
    echo "Error while updating EAS manifest. Please update eas_src/manifest.json manually"
  fi
  zip -u provider_fur_exchange_activesync-$LATEST_EAS_VERSION.1-tb.xpi manifest.json
else
  echo "No EAS Extension Provided. Skipping!"
fi

echo "You are now able to install the xpi to Thunderbird <= $TARGET_TB_VERSION!"
echo
echo "If an Error appears, like corrupted xpi file, you might need to start over."

# Cleanup
echo "Executing Cleanup"
rm -rf tbsync_src
rm -rf eas_src
rm -rf manifest.json
rm -rf content

Hi! Just a heads up that the script has a little typo--it references $VERSION instead of $TARGET_TB_VERSION.

Thanks, @VisruthSK, didn't catch that. Had probably still the VERSION variable active in my env while testing the script.

You may want to consider adding set -euo pipefail below the shebang (see, e.g., http://redsymbol.net/articles/unofficial-bash-strict-mode/).

Thank you for the script by the way, its quite handy.

Just to let anybody know: I am unable to use the Release for 140.X ESR on TB145.X Seems they changed a lot more...

https://www.thunderbird.net/en-US/thunderbird/145.0/releasenotes/

Enable support for Microsoft Exchange via Exchange Web Services

145 added native Exchange support, so that may be why. I think there are some limitations though: https://blog.thunderbird.net/2025/11/thunderbird-adds-native-microsoft-exchange-email-support/

Yes I already thought the same. This was original the case why I have updated. No Calendar for me at the moment.

Current Fix:

jobisoft/TbSync#772

I did not include the fix into the script yet.

I have added changes to apply the patches from #772

Currently, I switched to test versions of v5: https://github.com/jobisoft/EAS-4-TbSync/releases/tag/v5.0.10

The fix doesn't work any longer.