diff --git a/acme.sh b/acme.sh
index 260733a2..86e4ccf1 100755
--- a/acme.sh
+++ b/acme.sh
@@ -435,8 +435,10 @@ _secure_debug3() {
   fi
 }
 
+__USE_TR_RAW="$([ "$(echo "abc" | tr a-z A-Z 2>/dev/null)" = "ABC" ] && echo 1 || echo 0)"
+
 _upper_case() {
-  if _is_solaris; then
+  if [ "$__USE_TR_RAW" = "0" ]; then
     tr '[:lower:]' '[:upper:]'
   else
     # shellcheck disable=SC2018,SC2019
@@ -445,7 +447,7 @@ _upper_case() {
 }
 
 _lower_case() {
-  if _is_solaris; then
+  if [ "$__USE_TR_RAW" = "0" ]; then
     tr '[:upper:]' '[:lower:]'
   else
     # shellcheck disable=SC2018,SC2019
@@ -5752,7 +5754,9 @@ _installcert() {
     if [ -f "$_real_cert" ] && [ ! "$_ACME_IS_RENEW" ]; then
       cp "$_real_cert" "$_backup_path/cert.bak"
     fi
-    cat "$CERT_PATH" >"$_real_cert" || return 1
+    if [ "$CERT_PATH" != "$_real_cert" ]; then
+      cat "$CERT_PATH" >"$_real_cert" || return 1
+    fi
   fi
 
   if [ "$_real_ca" ]; then
@@ -5764,7 +5768,9 @@ _installcert() {
       if [ -f "$_real_ca" ] && [ ! "$_ACME_IS_RENEW" ]; then
         cp "$_real_ca" "$_backup_path/ca.bak"
       fi
-      cat "$CA_CERT_PATH" >"$_real_ca" || return 1
+      if [ "$CA_CERT_PATH" != "$_real_ca" ]; then
+        cat "$CA_CERT_PATH" >"$_real_ca" || return 1
+      fi
     fi
   fi
 
@@ -5773,12 +5779,14 @@ _installcert() {
     if [ -f "$_real_key" ] && [ ! "$_ACME_IS_RENEW" ]; then
       cp "$_real_key" "$_backup_path/key.bak"
     fi
-    if [ -f "$_real_key" ]; then
-      cat "$CERT_KEY_PATH" >"$_real_key" || return 1
-    else
-      touch "$_real_key" || return 1
-      chmod 600 "$_real_key"
-      cat "$CERT_KEY_PATH" >"$_real_key" || return 1
+    if [ "$CERT_KEY_PATH" != "$_real_key" ]; then
+      if [ -f "$_real_key" ]; then
+        cat "$CERT_KEY_PATH" >"$_real_key" || return 1
+      else
+        touch "$_real_key" || return 1
+        chmod 600 "$_real_key"
+        cat "$CERT_KEY_PATH" >"$_real_key" || return 1
+      fi
     fi
   fi
 
@@ -5787,7 +5795,9 @@ _installcert() {
     if [ -f "$_real_fullchain" ] && [ ! "$_ACME_IS_RENEW" ]; then
       cp "$_real_fullchain" "$_backup_path/fullchain.bak"
     fi
-    cat "$CERT_FULLCHAIN_PATH" >"$_real_fullchain" || return 1
+    if [ "$_real_fullchain" != "$CERT_FULLCHAIN_PATH" ]; then
+      cat "$CERT_FULLCHAIN_PATH" >"$_real_fullchain" || return 1
+    fi
   fi
 
   if [ "$_reload_cmd" ]; then
diff --git a/deploy/qiniu.sh b/deploy/qiniu.sh
index 70669917..02250ed3 100644
--- a/deploy/qiniu.sh
+++ b/deploy/qiniu.sh
@@ -53,7 +53,7 @@ qiniu_deploy() {
   sslcert_access_token="$(_make_access_token "$sslcert_path")"
   _debug sslcert_access_token "$sslcert_access_token"
   export _H1="Authorization: QBox $sslcert_access_token"
-  sslcert_response=$(_post "$sslcerl_body" "$QINIU_API_BASE$sslcert_path" 0 "POST" "application/json" | _dbase64 "multiline")
+  sslcert_response=$(_post "$sslcerl_body" "$QINIU_API_BASE$sslcert_path" 0 "POST" "application/json" | _dbase64)
 
   if ! _contains "$sslcert_response" "certID"; then
     _err "Error in creating certificate:"
@@ -75,7 +75,7 @@ qiniu_deploy() {
     update_access_token="$(_make_access_token "$update_path")"
     _debug update_access_token "$update_access_token"
     export _H1="Authorization: QBox $update_access_token"
-    update_response=$(_post "$update_body" "$QINIU_API_BASE$update_path" 0 "PUT" "application/json" | _dbase64 "multiline")
+    update_response=$(_post "$update_body" "$QINIU_API_BASE$update_path" 0 "PUT" "application/json" | _dbase64)
 
     if _contains "$update_response" "error"; then
       _err "Error in updating domain $domain httpsconf:"
diff --git a/dnsapi/dns_aws.sh b/dnsapi/dns_aws.sh
index 376936f5..50c93260 100755
--- a/dnsapi/dns_aws.sh
+++ b/dnsapi/dns_aws.sh
@@ -155,31 +155,20 @@ _get_root() {
   i=1
   p=1
 
-  if aws_rest GET "2013-04-01/hostedzone"; then
-    while true; do
-      h=$(printf "%s" "$domain" | cut -d . -f $i-100)
-      _debug2 "Checking domain: $h"
-      if [ -z "$h" ]; then
-        if _contains "$response" "<IsTruncated>true</IsTruncated>" && _contains "$response" "<NextMarker>"; then
-          _debug "IsTruncated"
-          _nextMarker="$(echo "$response" | _egrep_o "<NextMarker>.*</NextMarker>" | cut -d '>' -f 2 | cut -d '<' -f 1)"
-          _debug "NextMarker" "$_nextMarker"
-          if aws_rest GET "2013-04-01/hostedzone" "marker=$_nextMarker"; then
-            _debug "Truncated request OK"
-            i=2
-            p=1
-            continue
-          else
-            _err "Truncated request error."
-          fi
-        fi
-        #not valid
-        _err "Invalid domain"
-        return 1
-      fi
+  # iterate over names (a.b.c.d -> b.c.d -> c.d -> d)
+  while true; do
+    h=$(printf "%s" "$domain" | cut -d . -f $i-100)
+    _debug "Checking domain: $h"
+    if [ -z "$h" ]; then
+      _error "invalid domain"
+      return 1
+    fi
 
+    # iterate over paginated result for list_hosted_zones
+    aws_rest GET "2013-04-01/hostedzone"
+    while true; do
       if _contains "$response" "<Name>$h.</Name>"; then
-        hostedzone="$(echo "$response" | sed 's/<HostedZone>/#&/g' | tr '#' '\n' | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<PrivateZone>false<.PrivateZone>.*<.HostedZone>")"
+        hostedzone="$(echo "$response" | tr -d '\n' | sed 's/<HostedZone>/#&/g' | tr '#' '\n' | _egrep_o "<HostedZone><Id>[^<]*<.Id><Name>$h.<.Name>.*<PrivateZone>false<.PrivateZone>.*<.HostedZone>")"
         _debug hostedzone "$hostedzone"
         if [ "$hostedzone" ]; then
           _domain_id=$(printf "%s\n" "$hostedzone" | _egrep_o "<Id>.*<.Id>" | head -n 1 | _egrep_o ">.*<" | tr -d "<>")
@@ -192,10 +181,19 @@ _get_root() {
           return 1
         fi
       fi
-      p=$i
-      i=$(_math "$i" + 1)
+      if _contains "$response" "<IsTruncated>true</IsTruncated>" && _contains "$response" "<NextMarker>"; then
+        _debug "IsTruncated"
+        _nextMarker="$(echo "$response" | _egrep_o "<NextMarker>.*</NextMarker>" | cut -d '>' -f 2 | cut -d '<' -f 1)"
+        _debug "NextMarker" "$_nextMarker"
+      else
+        break
+      fi
+      _debug "Checking domain: $h - Next Page "
+      aws_rest GET "2013-04-01/hostedzone" "marker=$_nextMarker"
     done
-  fi
+    p=$i
+    i=$(_math "$i" + 1)
+  done
   return 1
 }
 
diff --git a/dnsapi/dns_cf.sh b/dnsapi/dns_cf.sh
index c2430086..cd8d9a8d 100755
--- a/dnsapi/dns_cf.sh
+++ b/dnsapi/dns_cf.sh
@@ -32,7 +32,8 @@ dns_cf_add() {
     else
       _saveaccountconf_mutable CF_Token "$CF_Token"
       _saveaccountconf_mutable CF_Account_ID "$CF_Account_ID"
-      _saveaccountconf_mutable CF_Zone_ID "$CF_Zone_ID"
+      _clearaccountconf_mutable CF_Zone_ID
+      _clearaccountconf CF_Zone_ID
     fi
   else
     if [ -z "$CF_Key" ] || [ -z "$CF_Email" ]; then
@@ -51,6 +52,14 @@ dns_cf_add() {
     #save the api key and email to the account conf file.
     _saveaccountconf_mutable CF_Key "$CF_Key"
     _saveaccountconf_mutable CF_Email "$CF_Email"
+
+    _clearaccountconf_mutable CF_Token
+    _clearaccountconf_mutable CF_Account_ID
+    _clearaccountconf_mutable CF_Zone_ID
+    _clearaccountconf CF_Token
+    _clearaccountconf CF_Account_ID
+    _clearaccountconf CF_Zone_ID
+
   fi
 
   _debug "First detect the root zone"
diff --git a/dnsapi/dns_cyon.sh b/dnsapi/dns_cyon.sh
index 2c08812b..830e8831 100644
--- a/dnsapi/dns_cyon.sh
+++ b/dnsapi/dns_cyon.sh
@@ -44,7 +44,7 @@ dns_cyon_rm() {
 _cyon_load_credentials() {
   # Convert loaded password to/from base64 as needed.
   if [ "${CY_Password_B64}" ]; then
-    CY_Password="$(printf "%s" "${CY_Password_B64}" | _dbase64 "multiline")"
+    CY_Password="$(printf "%s" "${CY_Password_B64}" | _dbase64)"
   elif [ "${CY_Password}" ]; then
     CY_Password_B64="$(printf "%s" "${CY_Password}" | _base64)"
   fi
diff --git a/dnsapi/dns_gcloud.sh b/dnsapi/dns_gcloud.sh
index d560996c..bda5cbd7 100755
--- a/dnsapi/dns_gcloud.sh
+++ b/dnsapi/dns_gcloud.sh
@@ -98,7 +98,7 @@ _dns_gcloud_remove_rrs() {
     --ttl="$ttl" \
     --type=TXT \
     --zone="$managedZone" \
-    --transaction-file="$tr"; then
+    --transaction-file="$tr" --; then
     _debug tr "$(cat "$tr")"
     rm -r "$trd"
     _err "_dns_gcloud_remove_rrs: failed to remove RRs"
@@ -113,7 +113,7 @@ _dns_gcloud_add_rrs() {
     --ttl="$ttl" \
     --type=TXT \
     --zone="$managedZone" \
-    --transaction-file="$tr"; then
+    --transaction-file="$tr" --; then
     _debug tr "$(cat "$tr")"
     rm -r "$trd"
     _err "_dns_gcloud_add_rrs: failed to add RRs"
diff --git a/dnsapi/dns_namecheap.sh b/dnsapi/dns_namecheap.sh
index d15d6b0e..dcd87723 100755
--- a/dnsapi/dns_namecheap.sh
+++ b/dnsapi/dns_namecheap.sh
@@ -259,7 +259,7 @@ _set_namecheap_TXT() {
   _debug hosts "$hosts"
 
   if [ -z "$hosts" ]; then
-    _error "Hosts not found"
+    _err "Hosts not found"
     return 1
   fi
 
@@ -313,7 +313,7 @@ _del_namecheap_TXT() {
   _debug hosts "$hosts"
 
   if [ -z "$hosts" ]; then
-    _error "Hosts not found"
+    _err "Hosts not found"
     return 1
   fi
 
diff --git a/dnsapi/dns_ultra.sh b/dnsapi/dns_ultra.sh
index 0100b3b7..0f26bd97 100644
--- a/dnsapi/dns_ultra.sh
+++ b/dnsapi/dns_ultra.sh
@@ -5,7 +5,8 @@
 #
 # ULTRA_PWD="some_password_goes_here"
 
-ULTRA_API="https://restapi.ultradns.com/v2/"
+ULTRA_API="https://api.ultradns.com/v3/"
+ULTRA_AUTH_API="https://api.ultradns.com/v2/"
 
 #Usage: add _acme-challenge.www.domain.com "some_long_string_of_characters_go_here_from_lets_encrypt"
 dns_ultra_add() {
@@ -121,7 +122,7 @@ _get_root() {
       return 1
     fi
     if _contains "${response}" "${h}." >/dev/null; then
-      _domain_id=$(echo "$response" | _egrep_o "${h}")
+      _domain_id=$(echo "$response" | _egrep_o "${h}" | head -1)
       if [ "$_domain_id" ]; then
         _sub_domain=$(printf "%s" "$domain" | cut -d . -f 1-$p)
         _domain="${h}"
@@ -142,23 +143,25 @@ _ultra_rest() {
   ep="$2"
   data="$3"
   _debug "$ep"
-  _debug TOKEN "${AUTH_TOKEN}"
+  if [ -z "$AUTH_TOKEN" ]; then
+    _ultra_login
+  fi
+  _debug TOKEN "$AUTH_TOKEN"
 
-  _ultra_login
   export _H1="Content-Type: application/json"
-  export _H2="Authorization: Bearer ${AUTH_TOKEN}"
+  export _H2="Authorization: Bearer $AUTH_TOKEN"
 
   if [ "$m" != "GET" ]; then
-    _debug data "${data}"
-    response="$(_post "${data}" "${ULTRA_API}"/"${ep}" "" "${m}")"
+    _debug data "$data"
+    response="$(_post "$data" "$ULTRA_API$ep" "" "$m")"
   else
-    response="$(_get "$ULTRA_API/$ep")"
+    response="$(_get "$ULTRA_API$ep")"
   fi
 }
 
 _ultra_login() {
   export _H1=""
   export _H2=""
-  AUTH_TOKEN=$(_post "grant_type=password&username=${ULTRA_USR}&password=${ULTRA_PWD}" "${ULTRA_API}authorization/token" | cut -d, -f3 | cut -d\" -f4)
+  AUTH_TOKEN=$(_post "grant_type=password&username=${ULTRA_USR}&password=${ULTRA_PWD}" "${ULTRA_AUTH_API}authorization/token" | cut -d, -f3 | cut -d\" -f4)
   export AUTH_TOKEN
 }